Alexander Bursac, who has claimed that a loan switch for Buttner to Besiktas remains on the cards, believes that Moyes has shown no faith in the player.
"Under Sir Alex Ferguson, Buttner was the up and coming man," Bursac told Voetbal International. "He started playing in more games and was trusted in training. That sense of trust is not there now."
Buttner moved to Old Trafford last summer.