I think my prediction that they will have a decent season is predicated on Klassen being a decent player as I don't know much about him. If he turns out to be a good player then I reckon they are just a target man (maybe Giroud) away from being a tough proposition next season.I can't overly see it working for some reason.
Pickfords a decent goalie but I think they've overpaid by about 20m
Keane, decent but not much better than what they've got
Klassen, should be higher up the pitch, meaning he's competing with Rooney and Barkley for that spot.
Lookman will get games but I still think he's too raw to be a consistent threat and starter
Bolasie is always a risk, but is sandro the big man to replace lukaku? He is a phenomenal striker in that system and I know little of sandro, but it's huge boots to fill
Keane is a big upgrade on their other CB options. Williams is good but getting on a bit (will get one more good season outta him), Jagielka has been superb for them but is a fading force and I've never fancied Funes-Mori.
....................................Pickford..................................
Holgate*...........Keane..........Williams............Baines
.....................Davies.......Schneiderlin..................
.........Lookman........Rooney..........Klassen...........
.............................Sandro.............................
I've actually just checked and Bolasie won't be fit for the start of the season but he will give them a great option when he returns. Holgate is a very promising kid but Coleman will come back in for him at some stage. Up front Sandro or Giroud if he signs. IMO that team will be good enough for top 6 and would have challenged for 4th place if they didn't have to play in Europe.
You could be right about Lookman but i have a sneaky suspicion that Lookman is destined for great things and I think this will be his "breakout" season.