ULSTER RUGBY TODAY confirmed that Luke Marshall has suffered his fifth concussion since March 2013, picking up the latest in training last week.

The 23-year old suffered two concussions on Ireland duty in 2013 and sat out their summer tour after taking another blow in Ulster’s Heineken Cup quarter-final defeat to Saracens that same year.

The six-times capped centre was involved in a fourth concussive incident in February 2014 though he still managed more than 25 games last season.

While there is no word yet on Marshall’s availability for Ireland’s Six Nations campaign, his Ulster team mate Dan Tuohy suffered a thumb injury in Sunday’s win over Treviso that will see him miss the opening games.

The lock will undergo surgery to repair a torn ligament on Tuesday and is expected to be out of rugby for up to eight weeks.