At the risk of being shouted at, I have a colleague who is a Gills season ticket holder and his view is this.
The Gills fans were convinced Sancho was going to fail a drugs test at the world cup. The performance, or more precisely, the amount of effort put in by Sancho had them all convinced he was taking Speed or something like that.
They love him, but he is not renowned for his work rate.
The other thing he told me, is that Sancho had a falling out with the Gillingham chairman, not the manager, which is why he has not been playing, However, if this was the case, I would have thought Gillingham would have been only too keen to sell him and get him off the wage bill.
One last comment, this time my thoughts. A team like Gillingham is all about hard graft and team work. The last thing the manager wants is players who think that because they have been to a world cup, they are too good for the club. I think what the manager is saying, is that it is all over now and they need to keep their feet on the ground and get back to their day job.