This is something, that is happening, not just with Tino, but as well with other players - we lost Guehi (for decent price) to CP, Bate (who I rate a lot) to Leeds. I am a bit worried this might continue as there are quite a few talented players in youth team who did not sign new contracts and they might do the same move as Tino, Bate or Guehi.
We keep players like Barkley on the bench and giving them playing time instead of promoting some youngster, who might do better job and might force their way into lineup. So yeah, a lot of opportunities, look out for Vale, Webster, Hall or maybe Soonsup-Bell, they are quite interesting players, who might impress similarly to those who you see.
What I feel is that Hassenhutl is hurting a bit relationships with Chelsea with his talking and that might make you miss on some of these talents coming over, as no team really likes when somebody is trying hard to poach your talent on the loan after criticising him at the start of the season.