That's what happens when money is the driving force. Mbappe is the only notable name that might have joined because of his obvious connection to the club, but him turning down RM on multiple occasions wasn't based on footballing reasons.
The driving forces were the front three. The bottom line is that; it's up to you to decide if you want to disregard it.
I have no idea why you're using Carlo as an example to support your point since he had a track record before joining us. Also, look at Xavi's & Arteta's record in Europe for starters; the former has failed to get out of the CL group stages for TWO seasons in a row.
To answer your question, Tuchel. I know there's no chance of either party building bridges, so I'm at a loss in that regard. I'd personally wait till the summer at the very least to assess our options before making any hasty decisions, even if we sack Potter in the meantime.