Sanchez said Friday he has no issue with the team signing Morrison - a player who openly questioned Sanchez's inclusion in the 2017 Home Run Derby - to a minor-league contract.
"That's a long time ago. We're way over that stuff," Sanchez said through an interpreter, according to Bryan Hoch of MLB.com. "Now, he's a teammate and we're going to treat him as a teammate here. We're going to welcome him into this clubhouse. There's no sense of talking about something that happened so long ago."
Morrison's comments came in the midst of a career 2017 campaign with the Tampa Bay Rays; he was out-homering Sanchez 24 to 13 but was omitted for the latter to compete in the derby.
"Gary shouldn't be here," Morrison said at the time. "Gary's a great player, but he shouldn't be in the Home Run Derby. I remember when I had 14 home runs. That was a month and a half ago."
Morrison later questioned the intelligence of Yankees fans after he was booed in his return to New York as a member of the Minnesota Twins in 2018.
Yankees manager Aaron Boone, meanwhile, is looking for some depth at first base after the club recently lost Greg Bird to a left plantar fascia tear.
"He's a guy that has a proven big-league track record," Boone said. "It's just good for us to get a guy that if we're in a situation, he's capable of doing some damage if he got up here."