He must not play if we want to survive, simple as that, forget about putting players around him to make his game easier, just put someone there who is much superior and making life easier for everyone else without a need to drag the whole team out of a defensive shape just to accommodate him.
I think every new Everton manager goes through that phase to experience first hand how some of the players are "pretenders". But the frustrating part is they can put in a good performance, so it's always a roll of a dice on these players. And how many we've seen Andre Gomes play as if he is this mid maestro only to be massively disappointed the next game?
I respect Lampard that he wants to assess the players on his own without the influence of fans, ex-managers, board, etc. but I think for players like Gomes, Micheal Keane, Iwobi, Gbamin and Tosun, they are better off left untouched and only be used in FA Cup. Now we are in serious trouble in the PL, we actually do not have time for him to test players out.