I don't really get the Lucas hate.
Great squad player imo and can have a worldie on his day. Pacey, hard worker and is a decent finisher.
Mourinho obviously rates him and I think most teams would be happy to have him as an option off the bench.
For me it's clear that the front 4 picks itself in a 4231 - Kane with Alli behind and Bergjwin and Son as wide forwards.
Our issue is how to balance the midfield behind that and get the best out of the two most technical players we have (Lo Celso and Ndombele).
But as a back up across that front 4, Lucas and Lamela are good options. I'm not sold on Fraser at all but as a free transfer it's almost zero risk - sell in 2 years for 10m and walk away if he's pony.
I personally like the 433 but that's just because im desperate to get Gio and Tanguy playing sexy football together in the middle... not sure we will ever see it consistently though