MacArthur diagnosed with concussion after hit by Senators hopeful Sieloff

Clarke MacArthur is dealing with another head injury, and this one occurred in a controversial manner.

The Ottawa Senators forward was diagnosed with a concussion and taken home to rest Sunday after being drilled by defenseman Patrick Sieloff in training camp.

Related: Bobby Ryan goes after farmhand for blindside hit on MacArthur

Senators general manager Pierre Dorion said MacArthur will be evaluated daily.

"We're at the point where we're heartbroken," the GM said, according to the Ottawa Sun's Bruce Garrioch. "I don't care about the hit. I care about Clarke."

Bobby Ryan and Chris Neil both went after Sieloff after he caught MacArthur with a dangerous hit along the boards.

MacArthur appeared in only four games last season due largely to concussion issues.