Problem is... regular guys need a sequence of games to get confident and earn a relevant spot in the squad.
Exceptional players won't really need it, like Pogba. But a normal player, like a normal person, needs that.
And Conte is known for not being patient with these situations. Immobile could be one of those cases where the guy needs to play straight matches so he can pick up his confidence, and I don't know if he'd be able to do that at Juve and with Conte.
But it's definitely worth the shot. Hopefully the supporters and Conte will have patience with him.