Mitch Trubisky growing up fast in Nagy’s offense

Photo by Jonathan Daniel/Getty Images Bears quarterback Mitch Trubisky likes his supporting cast entering his third NFL season and second in Matt Nagy’s offense. “We’ve got a ton of weapons on offense,” he said. “It’s a lot of fun for a quarterback.”It’s still Matt Nagy’s offense. But eventually, it’s going to have to be Mitch Trubisky’s.

After a year of growing pains, weapons upgrades and Nagy learning which buttons to push, the success of the Bears’ offense in Year 2 rests largely on Trubisky’s ability to make it all work.

“Last year he learned [this offense]. Now he’s trying to master it,” Nagy said Wednesday after the Bears’ fifth offseason practice at Halas Hall. “He’s done a wonderful…