Aiden O’Brien was signed, sealed and delivered with less than four hours remaining, becoming the fifth new arrival through the door this month.
With eight players heading in the opposite direction, it’s clearly been a hectic period for all involved at Fratton Park.
So, click through to see how Pompey’s winter window unfolded.
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13. IN: Aiden O'Brien - Sunderland (permanent)
Pompey's only deadline day arrival makes sense on a number of levels. His versatility allows him to plug the striker and attacking midfield gap, but he hasn't started a game since November. Is believed to be a model professional and could be a good influence on the dressing room. Will also be playing for his future after signing a short-term deal. Photo: Portsmouth FC