Thats clearly hyperbole mate, whilst Richarlison is our best player we still have players who CONTRIBUTE to the team - Gomes, Bernard, Holgate, Digne, and to a lesser extent Walcott & Mina.
The problem is Kean offers nothing, zilch, nada - he has the same impact as Niasse. If he's as good as what we think he can become it doesn't matter who his manager is - a loan move to the championship would sort him out and give him the experience and regular game time needed.
A question - do you think Holgate and Tammy Abraham would be as good as they are this season had they both been sat on ours and Chelsea's bench last season barely getting a game?
Their loan move helped them - look at Nketiah's recent comments for Arsenal:
"Eddie Nketiah believes his tough loan spell with Leeds helped him prepare for the battle to become Mikel Arteta's first-choice striker at Arsenal."
but apparently a loan move is to good for Moise.