How he helps Dak Prescott:
"He's an explosive outside receiver," coach Jason Garrett said.
How he helps Ezekiel Elliott and the running game:
"When they are loading up the box, there are big-play opportunities outside if you have guys who can make those plays," Garrett said.
How he helps offensive coordinator Scott Linehan:
"Whenever you add a player to help you attack the defense, I think that is good for everybody," Garrett said.
Before the Cowboys can tap into the possibilities with Cooper, though, they need to teach him the offense.
The Cowboys have two light practices this week with their bye coming Sunday, and they will have an extra day of work next week leading into their Nov. 5 meeting against the Tennessee Titans on ESPN's Monday Night Football.
For Prescott, it's a case of good news/bad news. The quarterback has a new weapon who should help him, but if he had any plans to go away for the break, well, those might have to be scrapped. The same goes for wide receivers coach Sanjay Lal and Linehan.
"We benefit from the fact that there is a bye, so there is extra time to [get] Amari with the coaches and Amari with Dak," Garrett said, "and we will do everything we can over the next few days to get on the same page."
Bye-week practices are generally for the backups to get some work and the starters to get some rest. Right guard Zack Martin and tight end Geoff Swaim will not practice Wednesday or Thursday because of knee injuries. Left tackle Tyron Smith has been slowed by an ankle injury and he might get some time off.
Prescott took some big hits in Sunday's loss against the Washington Redskins and is on pace to run the ball more than he ever has in a season. Normally, maybe he would get some rest, but the acquisition of Cooper could change that.
"You want to make sure within the confines of what you want to do as a team to give Dak and Amari an opportunity to get to know each other as well as you can, based on how you do stuff, individual periods, team periods and throughout practice," Garrett said. "We will try to do that the next couple of days."
Garrett said the Cowboys' offense is "user-friendly" in that it is not that difficult to learn quickly. Most teams run the same plays but they are called something different. Cooper's last two offensive coordinators in Oakland, Greg Olson and Todd Downing, worked with Linehan in St. Louis and Detroit. Garrett's last year as a player was with Jon Gruden in Tampa Bay, so he knows what kind of scheme Cooper is coming from.
Garrett said the coaches are still discussing whether to have Cooper learn just one receiver position at the outset even if they think he can play multiple spots.
"The biggest thing is the language and the nuances and the details that are different here than they are any other place that he's been," Garrett said. "Try to get it going as quickly as we can with the intellectual and the mental part of the game, understanding where to line up, what the words mean, what the numbers mean, all of that, and then get him out on the practice field and get working together with the rest of our guys."
In 2008, Garrett was the Cowboys' offensive coordinator when the team traded first-, third- and sixth-round picks to Detroit for Roy Williams. Tony Romo did not play in Williams' first three games because of a broken pinkie, and the quarterback and receiver had difficulty getting on the same page, although that continued for most of Williams' time with the Cowboys.
In September, the New England Patriots traded for Josh Gordon from the Cleveland Browns. Gordon played 16 snaps in each of his first two games in New England and more than 60 in his past two. He has two touchdown catches and had four catches for 100 yards in the Patriots' win Sunday against the Chicago Bears.
It's not a coincidence Gordon's locker is right next to Tom Brady's.
The Cowboys would figure to do something similar with Prescott and Cooper.
"Building a connection, that's one of the best things that Dak does. He has such a great way about him with so many people on our team -- young guys, older guys, guys at different positions, guys on either side of the ball," Garrett said. "He does that very naturally as well as anybody I've been around. For a quarterback and a receiver to connect to develop, it's just time on task, communication throughout that whole process, this is what we do, this is how we run it, this is the angle I want you to come out of it, like this. All of that stuff -- he's very good at that stuff, Dak is. I don't anticipate that being a problem. I know Amari is excited to be here and he's excited to get going; those guys will work together."
Unlike Gordon, who played just five games since 2014 entering this season because of suspension, Cooper has been playing almost weekly for the Raiders since he was a first-round pick in 2015. He has missed just two games in his career. He suffered a concussion in his most recent game, but the Raiders were off last week on their bye.
That doesn't guarantee instant success, but the Cowboys know they have to speed up Cooper's learning if they want him to make a major impact this season.
"The biggest thing is get him in here and get him up on the board, get him watching tape, get him out on the practice field and just simply get him going," Garrett said. "He certainly has the physical capability of playing on either side, strong side or weak side, playing inside. He's capable of doing whatever we'd ask him. We've just got to get him moving in that direction in our offense as quickly as we can."