I don't know if it's already been mentioned but Niasse, what he lacks in skill he makes up for with endeavour and he ran his socks off and worked hard when he came on.Agree.... it’s Duncan , Marco Silva, Carlo Ancelotti or your local Sunday league manager. If you don’t put effort in as a bare minimum you shouldn’t be on the field.
You can have an off game by all means, but you should be able to run, get into a position to effect the game, and make a nuisance of yourself. If you can’t then you should be brought off and expect to be brought off - no matter how long you’ve been on the field.
I fully agree and support that decision.