They are welcoming him cause he showed he can now play test cricket in one dayers by scoring 66 in 129 balls against Bangladesh.
If a team like Bangladesh can put pressure on someone like Ganguly who use to boost when he was sacked, that he has scored 15 thousand international runs, then just imagine what the better teams like Australia, South Africa etc would have done to him. These werent the Indian pitches where Ganguly got the MOS award against a weak SL bowling attack on batting pitches.
He was so sluggish even against Bermuda. But he can now play test cricket and he proved it.
One of the worst test batsmen to grace test cricket, his averages which are near 30, No of 50s, 100s(Only 1), against tough opponents like Australia, South Africa, Pakistan & West Indies, prove how delicate his mindset was against fast bowlers.
Kolkatta Welcomes a One Day Specialist who showed he can play test cricket in one dayers too.