Always find it's hard to judge an isolated season (or in this case, half a season). Different circumstances, new coach, new environment. Like you say, Ajax were a mess. He only started two games for them in 5 months!
Much easier to just judge a player on things he is good at and if those are things teams are missing as opposed to environment.
Salah at Chelsea is an example. Clearly just didn't fit in there. If we had signed him off the back of his Fiorentina season, people would probably be questioning why we would be interested. Just one of those things. No one could forsee Salah ending up as one of the leagues greatest ever players.
There's also plenty of one season wonders out there too.
Not say to Mikataudze is someone we should be looking at but I was seriously impressed with his performance against Turkey from his work rate, technique, movement (but also, can never judge on a tournament either)
Will be interesting to see how he goes today.