I’m afraid that Quansah’s self-confidence has taken the strongest hit when he made a mistake at Old Trafford that resulted in Fernandes scoring from near the halfway line, which is when the team’s steep downturn in form started. The team never recovered, and it probably lingered on in Quansah’s head even after the season had finished.
I think that Slot’s arrival and that half-time substitution only compounded that lack of self-belief from the end of the last season - he hasn’t played many games where he didn’t make a mistake since.
Maybe the only real criticism of Slot that I have up until now is the preparation and management of the recent Man United game. I don’t know if he wanted to protect Quansah (who is still very, very young, especially for a centre back) or if he misjudged Konate’s fitness levels but I’m certain that Trent should have been given the same treatment that Quansah got in Ipswich game - maybe not at the half-time but definitely should have got subbed off earlier in the second half.