Looks like Mushfiq will be in the squad no matter what. The qustion is whether they bring Pilot with him or not. I say don't take Pilot for few reasons.
1. It will only create more pressure on Mushfiq.
2. Pilot is not a good teamman and he will take it personally if they go with Mushfiq instead of him and create some kind of drama.
Take Tushar in the squad. He will not only serve as a back up middle order but in case something happens to Mushfiq, we will have a backup keeper. I have no idea though how good he is behind the stumps.