Manchester United title winner Robin van Persie can see Alexis Sanchez leaving.
Alexis is set to join Inter Milan.
And RVP told BT Sport: "He doesn't look happy to me.
I can't properly judge it because I am not working with him but when I see him play I rarely see him smiling.
Of course, I get it when you are playing you need to be serious and you want to win but after you score a goal you can smile, because that is the point of football.
We all play football because we like it and if you like something you should smile.
I think in the first couple of months after his move he was happy and he was playing well.
Mentally he needs to find that happiness again because if you are happy then you are fitter, you want to create and you want to have fun.
So I think he should find a way to be happier again."
