Crystal Palace have signed Croatia defender Borna Sosa from Ajax on a three-year deal.
The 27-year-old plays as a left-sided wing-back and Palace said he is "capable of influencing matches at both ends of the pitch".
He is Palace's second signing after the arrival of Argentina goalkeeper Walter Benitez on a free transfer.
The FA Cup winners are awaiting a Uefa decision on whether they can play in next season's Europa League.
Sosa has joined for a reported £3m but one source has told the BBC it is £2m.