Wales lock Alun-Wyn Jones is hopeful he will be available to participate at some point in the defence of their RBS 6 Nations crown.
Jones, who has 67 caps, has been on the sidelines since November when he needed surgery to correct a shoulder injury he suffered against Argentina in Cardiff.
He said on Wednesday that his rehab was going well and he remains well on course to be back in action by the end of February, which would give him a chance of featuring against Scotland and/or England.
His availability would be a massive boost for interim coach Rob Howley, who is already without Jones' line-out partner Luke Charteris, missing for the entire tournament with a knee injury.
"Rehab is going well," Jones said. "I am on track, so I've just got to put the hard work in now.
"I am in good hands with the Ospreys medical and conditioning teams and I know that they will look after me.
"I am itching to get back involved, but when exactly that will be is down to how the next few weeks go."
Although he would rather be playing, Jones is also looking forward to cheering on the Ospreys in their crunch Heineken Cup clash with Leicester this weekend.
He added: "The games always turn out to be pretty memorable, and I don't see this one being any different.
"Sunday will be a massive day for the region. It's do or die for us in Europe this weekend, the stakes are that big for us. What you can guarantee is that it's going to be tense, edgy and physical, and we will have to match them across the field."