"The manager doesn't know his best team."
It is a regular criticism aimed at any head coach who frequently makes changes to a struggling side in search of a winning formula.
It is one Chelsea boss Graham Potter, armed with a bulging roster of high-priced talent, is likely to hear a lot unless his side put together a winning run and move up the Premier League table.
There were murmurs of it after the soulless 0-0 draw with Fulham on Friday that included five of Chelsea's new signings from the £300m-plus January spending spree that was sanctioned by the club's new owners.