I understand your point mate but I have to disagree a wee bit.
I think it has been refreshing to see a young player like him, who is very, very good, go somewhere where he will be playing all the time (granted against teams in the SPFL who are mostly average) and also get to ply his craft in Europe. I read an article the other day that while playing in the Champions League for Celtic he has scored 3 goals in 4 games, which is more than any other player who is currently under the age of 21 that has played in the Champions League. On top of that, only Thierry Henry, Yakubu, Johan Elmander and Del Piero have a better goals per game ratio before the age of 21 that have ever played in the Champions League. I know stats can be misleading or used to any form to back up an argument, but had Dembele went elsewhere and sat on the bench or stayed at Fulham he would not be showcasing that talent and advertising all over Europe just how good he is. I agree with the intensity comment, but in two Old Firms this season he has also scored 4 goals. I know Rangers aren't as strong as Celtic, but that is still an impressive return for a young lad like him in such an intense derby. Furthermore, again the standard in the SPFL isn't great, but games are very hard and are more like wars of attrition and it often takes a spark or stroke of genius to unlock games and Dembele has proven he can do that too.
From the way he has performed so far this season, if he keeps on going with Celtic and has a great season there is no way he will still be up here in Glasgow next season and some big club will certainly pay through the nose to get him. That will be seen as a great bit of business by Celtic, but also a sound career choice by Dembele too, as he will have showcased his talent and proved (in Europe and in hard, games of attrition in Scotland) he can make a difference. This will earn him the right to move to a big club, and at least be starting once he gets a big move. (May have rambled a wee bit there, apologies!). Personally, if Zlatan decides to pack it in here after one season, I would like to see us move for Dembele, as I believe he has a really bright future.