Bohemians defender Warren O'Hora has joined Brighton.
He will link up with the under-23s for an undisclosed fee.
Brighton coach Simon Rusk said: “We're pleased to secure the services of Warren, after he impressed during a couple of training sessions before Christmas.
“He's had some good experience playing in Ireland's Premier Division last season, and he'll certainly add to the competition we already have in central defence.
“We're delighted to welcome him to the club and are keen to contribute towards his continued development as a footballer."