The Bills rank 21st in total offense, including 25th in passing offense. They’ve missed Stefon Diggs and Gabe Davis, who combined for 152 catches for 1,929 yards and 15 touchdowns.

That’s why they traded for Amari Cooper on Tuesday.

Now in his 10th season, Cooper is averaging 80 receptions for 1,134 yards and seven touchdowns per season.

“I guess that remains to be seen (how much Cooper can help), right,” Bills coach Sean McDermott told reporters via video from the team. “He was clearly on a different team until a few hours ago. We want to bring him in here and get him up to speed on our terminology and our system and see how he fits into it. Like I said, it’s never about one man. It’s about the team and in this case the offense.”

Cooper is not having his best season, with the Browns ranking 32nd in total offense and 30th in passing offense and in an apparent rebuild. He hasn’t had a 100-yard rushing game since last Christmas Eve, when Cooper torched the Texans for 265 yards and two touchdowns.

Still, Cooper’s 24 catches for 250 yards and two touchdowns are more than any wideout on the Bills this season.

“On paper it’s one thing,” McDermott said. “At the end of the day, can the person play and help us? That’s really what we’re going to see in the coming days. I hope the answer to all of this is yes. We’re going to take on Amari and have a lot of respect for him and his game, but again, we have players in the building that we already have confidence in, and he’ll fit into that equation and we’ll get him integrated and excited and see how quickly he can get up to speed here.

“Again, one player doesn’t save a team. One player does not make a team. It’s about the team.”

The Bills’ top four wideouts, Khalil Shakir, Keon Coleman, Curtis Samuel and Mack Hollins, have combined for 548 receptions for 6,469 yards and 41 touchdowns in their careers. Cooper has 691 receptions for 9,736 yards and 62 touchdowns.

He’s a No. 1 receiver.

“Everyone in that room before Amari was here had slightly different skills,” McDermott said. “So now it’s really here and how will it fit into the room and how our system can use Amari’s strengths to make our system better.”