Manchester United have confirmed the signing of defender Alexander Buttner from Vitesse Arnhem on a five-year contract.
The left back was a target for Saints earlier in the transfer window.
Buttner is moving to Man Utd for a £3.9m fee, believed to be almost £1m more than what Saints had agreed to pay for him.
His move to Saints collapsed after the intervention of 'a third party' according to Vitesse, which was demanding more money.
The Dutch club however did make it clear that Saints had acted totally above board and were in no way to blame for the collapse of the deal.