We have three receivers that conceivably have some long term prospect for the team: Mooney, Claypool, VJJ.
Then there is ESB, who just got an extension that isnt hard to move on from, and Harry who is a former first round project but also easy to move on from.
Personally, I would give Harry another year here and draft a rookie to compete with ESB and VJJ for the snaps where a WR sweep is a threat. Aside from Lazard being graceless in victory when he has played us (which counts for joining this team), he would be redundant with guys that are already on the team.
Right now, if you cant make GBs roster at WR with the long-term questions that remain for that team and years of connection built up with the starting QB, I dont see what point there is to give him a tryout with someone who... just did the same thing (ESB)