Yep, I don't see how he's a good fit. Martial's footballing intelligence is minimal, poor movement, decision making. Not sure that's the kind of player Sarri likes.
Still wouldn't be shocked if we see Martial and Willian swap this week, but I think its a low chance.
I feel that’s a bit of a oversimplification of Martials abilities and issues.
When Martial was at his sparkling best he would destroy defence, always find space and even take out one or more defenders. Now this was during the part of Van Gaal’s time, just before Shaw’s injury.
And here are, in my oppinion, the key aspects of Martials issues.
1) He had complete trust from Van Gaal.
2) He had a fantastic partner in Shaw.
I think, given Martials young age and perhaps personality, he needs this.
Now look at the last few seasons.
His partners have been the likes of Young or even Blind or Rojo. All of them not natural left backs and also severely lacking in skill on that position. The link up play has been poor, and them not being any real threat offensively have made it so easy to lock down Martials, since no one was opening space up for him like Shaw did.
Secondly it seems clear that Mourinho doesn’t trust in Martial. Now given the lack of a good partner has hurt Martial and therefor Mourinho has seen almost nothing warranting him playing Martial, everything has just spiralled downwards for Martial.
I have a feeling if we would see Martial in Madrid or Munich where the leftbacks are excellent offensively, he would shine.