TRANMERE Rovers have today completed the signing of defender Mark McChrystal on a six-month contract.

The 26-year old joins from his home town club Derry City where he has spent the last three seasons.

McChrystal began his career at Wolverhampton Wanderers and has also spent time at Partick Thistle.

He has been capped by Northern Ireland under-21s three times. He spent two weeks on trial at Prenton Park earlier this season.

Manager Les Parry said: "We brought Mark in the two weeks at the end of October when he trained with us and played in a couple of friendlies.

"He is an experienced player who was with Wolves for a number of years.

He is a leader, he talks and is the type of player other players will look up to.

"We will now have four experienced centre backs with Mark competing for a place alongside Ian Goodison, Marlon Broomes and Ash Taylor."