Jay Gruden thinks Jermaine Gresham can be like Gronkowski

The Bengals took tight end Jermaine Gresham with the 21st overall pick in 2010, 21 picks before the Patriots picked another tight end in the second round. That was Rob Gronkowski, of course, and he has become one of the standard bearers at the position. That means guys like Gresham and the men who coach…