Wellens, 31, has missed much of pre-season and is still under treatment for the injury, but is hopeful of returning early in the season.
Before the 19-man squads were revealed without the full back’s presence, he said: “It is getting better and I am targeting this weekend’s game, but if I don’t make it I will be looking at the week after. I won’t play unless I am 100 per cent fit but I’m confident I will be ready for the early rounds.
“I am chomping at the bit to get back but have to listen to the medical staff. If it means missing a couple of games to play the rest of the season that’s ok.”