Portsmouth have completed their fourth signing of the summer after snapping up Southampton defender Martin Cranie.

Pompey have agreed an undisclosed compensation figure with their south coast rivals for the 20 year old who manager Harry Redknapp handed a Premier League debut to when he was in charge at St Mary's almost three years ago.

"Martin is a very promising young player who has the ability to go right to the very top of the game," Redknapp told the club's official website.

"I remember when I played him at Man City when I was at Southampton and he did a great job that afternoon on Shaun Wright-Phillips.

"He has bags of talent and is a great addition to the squad."