Which receiving corps will benefit most from offseason departures?

Many pass catchers changed addresses over the course of the offseason, leaving a handful of options to pick up the slack. Here's a breakdown of the offenses that will see the biggest changes in fantasy relevance/value:

Detroit Lions

Key departures: WR Calvin Johnson, WR Lance Moore, RB Joique Bell
Production lost: 220 targets, 139 catches, 1,837 yards, 13 touchdowns

The obvious assumption is that Golden Tate, who caught 90 passes for 813 yards last year, will eat up most of the targets with Megatron in retirement. However, the offseason acquisition of Marvin Jones provides an interesting competition for the Lions' WR1.

I fully expect Jones to be a far more productive fantasy player in non-PPR leagues. The 6-foot-2 wideout is an underrated deep threat, having caught 65 passes on 103 targets for 816 yards last season with the Bengals despite taking a backseat to WR A.J. Green and TE Tyler Eifert. He isn't the fastest receiver, but he is great at using his length and has outstanding hands.

Tight end Eric Ebron is also an intriguing player this season. The former 10th overall pick will surely accumulate some of Johnson's leftover red zone targets. He is 6-foot-4 and 255 pounds and caught 47 passes for 537 yards and five touchdowns in 14 games a year ago.

Overall, Tate will still provide great possession numbers. It's possible he hauls in 100 receptions, but expect Jones to rack up the big plays and establish himself as Matthew Stafford's favorite downfield target.

Cincinnati Bengals

Key departures: WR Marvin Jones, WR Mohamed Sanu
Production lost: 153 targets, 98 catches, 1,210 yards, four touchdowns

Jones and Sanu were Cincinnati's second- and third-string wide receivers behind Green last season. Veteran Brandon LaFell was acquired in the offseason, but I have a hard time believing he will be a consistent fantasy producer despite being the de facto No. 2.

Green will obviously accumulate a boatload of targets. He's a sure-fire first round pick. Expect Eifert, if healthy, to finish with the second-most targets by season's end, and RB Giovani Bernard to finish with the third-most. This leaves little opportunities for the steady, but unspectacular LaFell to shine.

The Bengals used a second-round pick on Pittsburgh WR Tyler Boyd. He has decent size (6-foot-1, 197 pounds), but ran just a 4.58 40 time at the combine. What makes him worthy of a second-round pick are his exceptionally soft hands and advanced route-running skills. Cincinnati will likely use him in the slot, but it would take an injury to Green for Boyd for him to have significant fantasy value.

Cleveland Browns

Key departures: WR Travis Benjamin, WR Brian Hartline
Production lost: 198 targets, 114 catches, 1,489 yards, seven touchdowns

TE Gary Barnidge led the team in receptions, yards and touchdowns, and he might do the same in 2016 if he can form chemistry with Robert Griffin III.

RB Duke Johnson Jr. caught 61 passes for 534 yards last season as a rookie. Don't be surprised if he leads the NFL in receptions by a running back. He'll be a PPR monster once again, as the Browns project to be trailing often.

To help fill the void left by Benjamin and Hartline, the Browns used a first-round pick on WR Corey Coleman. The former Baylor star is just 5-foot-11, but has outstanding speed and deep threat ability. He has value based on the sheer volume of garbage time targets he will receive, but his small stature and inconsistencies catching the ball away from his body may lead to struggles.

Coleman has the ability to post Benjamin-like numbers (68/966/5), but Barnidge will likely remain as the top receiving threat, with Josh Gordon in the mix after he serves a season-opening four-game suspension. Journeyman Marlon Moore, veteran Andrew Hawkins and fourth-round rookie Ricardo Louis will largely fight for scraps once Gordon returns.

Indianapolis Colts

Key departures: WR Andre Johnson, TE Coby Fleener
Production lost: 162 targets, 95 catches, 994 yards, seven touchdowns

With Johnson no longer in the picture, expect a monster season from Donte Moncrief as the No. 2 receiver behind T.Y. Hilton. Moncrief should easily build on the 64 catches and 733 yards he had in 2015.

For the last four seasons, the Colts have had two talented tight ends in Fleener and Dwayne Allen. It was always hard to trust either of them in fantasy, much like it can be hard to trust a team that splits carries between running backs.

Now with Fleener out of the picture, Allen can shine as the No. 1 tight end. Don't expect him to eat up a bunch of targets, but he could easily contribute 500 yards and somewhere in the neighborhood of 6-8 touchdowns.

Despite having other needs, the Colts spent a late first-round pick on speedy WR Phillip Dorsett in 2015. The former Miami Hurricane struggled in his rookie season, hauling in just 18 of 39 targets for 225 yards and one score. Expect him to be more involved in the offense this year as the clear-cut No. 3 WR.

Overall, Hilton is a great deep threat and a solid WR1, but he lacks the size to be a dangerous red-zone threat. Expect him to return to his 2014 form as long as Andrew Luck stays healthy, but most red zone targets will likely go to Allen and Moncrief.

San Francisco 49ers

Key departures: WR Anquan Boldin, TE Vernon Davis
Production lost: 139 targets, 87 catches, 983 yards, four touchdowns

Although he has been inconsistent with his hands throughout his entire career, expect a productive season from Torrey Smith as the club's No. 1 WR. He is a legitimate deep threat, leading the NFL with 20.1 average yards per reception a season ago.

Behind Smith is a glut of unproven wideouts. Between Bruce Ellington, Quinton Patton and Eric Rogers, someone will emerge as the No. 2 WR.

The 5-foot-9 Ellington has little experience, but has received plenty of positive buzz this preseason and could become a decent slot receiver. The 6-foot-3 Rogers may have the most upside of the three after dominating the CFL last year. Patton could turn into a solid possession receiver.

Yet, Smith remains the only pass-catching option worth drafting in any 10- or 12-team leagues. In Chip Kelly's up-tempo offense, Smith could receive loads of targets considering the 49ers are expected to play plenty of garbage time minutes.