Cooper has been working with the offense for a while now, in a players only environment. He said in particular that he has been working with Lamb a lot on his routes. He said that Lamb already does it pretty well and that Cooper is just helping him fine tune.
that is really nice to hear. A lot of WR1’s might not help the hotshot WR draftee. Cooper May be the best route runner in the league, so no one better to help CeeDee.
Here is the quote from the article:
"Me, Dak, some of the other receivers, tight ends, running backs – we've all been working together pretty consistently for months now," he said. "Working on our route running, working on the offense and everything like that. We've been getting a lot of work in, getting that timing right as if we were going to minicamp or OTAs."
Lamb has also been part of that, according to Cooper. Prior to the Cowboys reporting for the start of training camp, Cooper said he worked with the rookie and came away impressed with his skill set.
"I think he's a quick learner. He already has a good foundation, he's fundamentally sound as a route runner," Cooper said. "It's very small, nitpicky things that I help him with, that I may see – him being a rookie."
Link:
https://www.dallascowboys.com/news/cooper-has-high-expectations-for-dallas-offense