Who should I drop on my team? ( I need a TE for week 10)?

You have 7 weeks well more like 6 1/2 weeks before then, don't drop them to get someone that even when he does come back might not be 100% for the first couple games. I would take my chances of either dropping someone else like a kicker for someone that is a free agent when it came down to it but not until after week 9... you are thinking way too far down the road. If these guys are still doing good at that time i would even consider playing that week w/out a TE.