There was a documentary that followed Jason Kreis when he was over here(still is?) and he pointed out a few players to Vieira when he was watching training and was if I remember saying he would like to take a certain player to NYCFC. Perhaps it was Ambrose?
Going for a season to NYCFC to lead the line alongside one of the best strikers in Europe over the past 5 years will do him no harm what so ever. He will learn a lot from Dzeko, Aguero and Negredo etc as well but starting alongside Villa would be very beneficial.