Stephen Robinson fears Ryan Strain could be out for weeks with a groin strain as he welcomed back fit-again Jonah Ayunga to his St Mirren squad.

The 26-year-old wing-back had to go off in the first half of Australia’s World Cup qualifier against Palestine in Kuwait and had a scan on his injury on returning to Scotland.

Ayunga has not played for the Buddies since he ruptured his ACL against Motherwell in January, but the 26-year-old striker has worked himself back into contention for the cinch Premiership game against Livingston on Saturday.

The St Mirren boss is looking for a “reset” after a 4-0 defeat by Dundee before the international break, but will also have Keanu Baccus suspended for the visit of the Lions to Paisley.

Robinson said: “Ryan Strain came back with a groin injury, which we had scanned yesterday, so we are still waiting on results from it but we are not very hopeful.

“He certainly won’t be available for Saturday. It looks like it will be weeks rather than days so it is a big blow for us.

“Jonah has been training for nearly six weeks now which is a lot of good training time.

“He played 90 minutes last week (bounce game) and was very good. So he is certainly ready to be involved, at what stage or level we will decide in the next 24 hours.

“Jonah is a very laid back boy. There is not a lot that gets him up or down. I am sure there is maybe a different side to him at home, but he is a great boy, a boy who I have worked with at two clubs.

“He has pushed himself and credit must go to Gerry Docherty (physio) and Gary McColl (strength and conditioning), who have pushed him to the limit and got him into a condition that he is ready to go. It is credit to all three.

“I felt the game against Dundee was a one-off game, where as a collective we didn’t play particularly well and we need to reset ourselves again and do what we were doing which was not playing in front of people and I am comfortable we will do that on Saturday. We want to get another win under our belt.”