But the Belfast-based side have quickly dismissed these fears and insist Best, who has 34 caps for Ireland, could be fit for their trip to Italian new boys Aironi this weekend.

The statement read: “Following investigation and opinion from his surgeon, Ulster Rugby can confirm that Rory Best has sustained no new injury or any further damage to his neck.

“Rory, who underwent surgery early last season for a chronic disc condition, was forced to leave the pitch during Friday’s match against the Ospreys at Ravenhill, but the injury has been confirmed as soft tissue irritation.

“Rory will have ongoing treatment and assessment this week with a view to his availability for selection.”