I think we can all agree DDG is a club legend, albeit he deserves the vehement criticism that went his way after that Everton game. But that’s not what this thread is about.
De Gea was the best keeper in the PL and the entire world in 2017-18. He made a decent team come 2nd, when we hardly had any right going by our performances to even be top 4. We eventually got 81 points. He then started 2018-19 well and prevented us from being bottom half and Mourinho from getting sacked even earlier. He made one mistake only iirc, for the Mustafi header against Arsenal, and even in that game, made a sensational point-blank save from Aubameyang. His top performances culminated in one of his best ever games away to Spurs where he made 11 saves and single-handedly won us the game.
And right after that, the very sudden decline. The mysterious, strange overnight decline. Right after that, he became an average goalkeeper who wouldn’t get into any top side in the world. Reflexes got worse, less agile, worse distribution, more cowardly. From best in the world, to mid-table goalkeeper. Absolutely mystifying.
So, as per the thread title, can people come up with an explanation as to why, because I’m at a lost when thinking about it.