Prior to joining the Buffalo Bills, quarterback AJ McCarron spent the first four years of his career with the Cincinnati Bengals. But despite skipping town to Western New York this off-season, McCarron still has one fan in Southern Ohio.

Aside from when he’s potentially facing his former team, Bengals’ wide receiver in A.J. Green will be rooting for Buffalo’s QB.

During a recent interview with ESPN’s Adam Schefter, Green was asked what Buffalo would be getting in McCarron.

Green gave a strong review.

“Oh for A.J. (McCarron), I know A.J. very well. You’re going to get a guy who’s going to compete his butt off,” Green said. “That’s one thing, that’s a guy I’ve been around for a while, he competes at everything he does, a guy that’s a natural leader, he’s going to give you everything he’s got when he out’s out there.”

In the first round of the 2018 NFL Draft, the Bills traded up to the seventh-overall pick to select Wyoming quarterback Josh Allen. However, some view McCarron as Buffalo’s best option in the interim, as Allen is considered a raw prospect who needs to correct his flaws before starting.

During his time with Cincinnati, McCarron barely saw playing time, stuck behind starter Andy Dalton. However, McCarron saw three-straight starts at the end of the 2015 season after Dalton injured his hand.

In the regular season, McCarron went 2-1 and then started a postseason contest which the Bengals lost 18-16 against the Pittsburgh Steelers.

Reviewing the numbers from 2015, it’s no surprise Green is a fan. Dalton was injured in Cincinnati’s Week 14 contest. McCarron jumped in and immediately found a connection with Green. That game, the two connected on a 66-yard touchdown.

Over the course of his next four starts, Green had 20 catches for 199 receiving yards. In total, McCarron and Green connected for four touchdowns as well.

This could be a good sign for the Bills. Green, a 6-foot-4 target, was a go-to for McCarron. The two formed a strong connection. Buffalo will hope McCarron can do the same with 6-foot-5 wideout Kelvin Benjamin next season.