No way, no how should a TE go top 10. There's no value in the position in the top 10 and I'll shit if the Cowboys draft him. It would be a completely wasted pick
If he is an all-world talent and easily creates mismatches downfield and in the redzone he is definitely worth it. There seem to be many draft gurus that believe he is the best non-QB prospect in the draft.
Like I also mentioned, it's likely that one of either Cooper or Gallup won't be here after this season (and perhaps could be traded during the draft or by the trade deadline, although its more likely it's after the season where one is released or leaves via free agency). The draft is as much (in fact more) about planning for the future, and having a player like Pitts can easily offset the loss of Gallup or Cooper, especially if Lamb develops as we expect.
That said, I fully expect him to be gone before we pick and we end up with Surtain, Horn or maybe one of the OT's.