If we're talking swapping out Lucas for Bale, so long as Bale is fit enough for 20-30 minute cameos here and there, it's a no brainer. Especially with CL potentially happening. Lucas is a great spur, but I think the difference between Dejan and Lucas makes it clear we need a different kind of player on the right side.
Not sure where Lauturo fits, for that money, unless Kane is leaving.
As a front 3, this seems okay:
Dejan/Bale --- Kane/Berg - Son/Gil
Obviously, if we can find a way to upgrade Bergwin for a more true 9, you do it. But he's shown the potential to do really well there. You'd have to hope Gil is ready, otherwise we're one short depth wise. Where eriksen might come in, but he's not usually played as a lw, more as a rw.
Focus needs to be on wing backs, LCB, and midfield.