he will not smash runs, but his bowling will still be good. with the amount of turn seen in Eden, shakib will actually be an asset there. Kolkata does not have decent spinners in the squad, i reckon if shakib can be consistent, he will be there all the way.
It is good to let Shakib off captaincy, it will relieve some pressure. He will be offered captaincy again in a few years when he will be more than ready, Bangladesh will voyage into a new horizon then