Chelsea are a weird one. They have a base of good young players, but they also have a lot of filler players and very expensive duds. That is also before you get to their loan army. For me, I think they'll be between 3rd and 5th next season but cannot see them pushing for the title. For me, this season was about par for them. They won a couple of trinket in the Super Cup and CWC and just came up short in the LC, FA Cup and CL QF.
However, it should be remembered that in those games they lost in the cups, they were probably the better team in 2 out of the three games/ties - I just edge the Dippers in the FA Cup final.
I mean, the CL was essentially lost on a combination of Lukaku and Jorginho missing a sitters, Mendy giving Benzema a goal and Kante giving a needless pass away. Any of those don't happen they probably beat Madrid.
LC final they had the most marginal (at best) of offsides called and the Dippers really should've gone down to 10 in ET.
That said, this summer they need to rebuild a defence, get some goal scorers and shift quite a bit of deadwood. Then they have the issue that Chilwell is the only LWB they have that can actually make their system function properly.
Imo, TT isn't the problem there and should be back. However, it will take some intelligent plays in the transfermarket to get them competing for the league again.