I know what you mean but he plays because we already had Dembele and they still broke our transfer record (previously was purchasing Mkhitaryan for £27million) to buy him
he wasn't bought to play second fiddle to Reus. TT is the one who made him who he was at Mainz and when he was awesome in the WC but has probably dropped off since.TT must be confident he can get him back to his best, transform him like he did Mkhitaryan. Don't forgot that Dembele is truly ambidextrous though and can play either side.
I agree though, Dembele oozes class and will still get a heap of starts. TT doesn't have a Dortmund best 11 so he will be rotated through bench and starting. Completely different story come 17/18 season though. Dembele, Mor, Passlack and Pulisic