There are some negatives with this guy for sure.
Negatives

Hands are a question mark, but many of his drops came on balls that were off the mark that he failed to properly adjust to.

Seemed to frequently not be on the same page as his quarterbacks in terms of timing and depth of routes, but it's difficult to assign blame to the receiver or quarterback without knowing the exact design of the play.

Surprisingly inefficient against press coverage.
He has the strength to fight off press coverage, but lacks the burst to pull away when he wins the physical battle.

Speed is adequate, but he's slow off the snap and takes quite a few steps to really get moving.

Has the size to break tackles, but otherwise doesn't provide much of a threat after the catch.

Lacks the speed and athleticism to lose defensive backs in man coverage.

Every reception is contested because he can't break free from man coverage.

Considering his size, his catch radius is relatively small due to a lack of agility in short bursts.

Struggles to adjust to poorly placed balls on shorter routes, which limits his effectiveness as a possession receiver.

Too hesitant as a blocker.

Needs to realize he has the size to be a dominant blocker, even without perfect technique, and become more aggressive.