I think we have a group with a lot of good attitudes and that can be contagious, as anyone who wants to be a part of the group and fit in would have to try and emulate that as well as possible.
With the likes of Ole as manager, Maguire as captain, and characters such as Rashford, Fred, Scott, AWB, etc, I think we can afford to bring in a very talented young man like Dembele who could possibly grow into a more mature version of himself when surrounded by such guidance.
It's a risk I think we should take for 37 mil especially since as @JPRouve said, he's not a bad character per se, just immature and needing better direction than he got at Barca. The fact that he would fit our playstyle a lot better than Barca's would be an added bonus.
And truth be told, there seems to be a real lack of quality left footed attackers, so it's a great opportunity to pick up one who isn't just left footed, but very two footed, at a discount.
Are you suggesting Messi isn't a great character with a great motivation? I suppose Barca have won everything possible by sitting back and not giving a shit and he's just fallen into the grove? Lad should aspire to be on the same pitch as them and give it his all.
Lad has heaps of potential, but so did Ravel and we still see people wanting him back at United. He was very very good at Dortmund, but seems very much out of his dept at Barca.
He's been criticised at Barca and by his national coach. He needs to show greater maturity. For 37 million (which is huge amount of cash) Ole will be looking at someone a bit more grounded.