Ian Evans is ahead of schedule in his recovery from surgery on an on-going knee problem - and could even be involved in the key Pool 2 match against Leicester Tigers at the Liberty Stadium a week Sunday.
The Tigers are marginally ahead in the group on 14 points, one ahead of four-times champions Toulouse, with the Ospreys five points off the pace but still in the mix with a trip to Italy to face Benetton Treviso their final contest when Leicester and Toulouse go head-to-head at Welford Road.
Line-out general Evans had keyhole surgery after the November international against Samoa and was expected to be out until the end of this month but could be poised to give the Ospreys a massive lift.
He was the only player to feature in every moment of Wales' five matches in their Grand Slam winning 2012 RBS 6 Nations campaign but was absent from the Ospreys' back-to-back group matches against Toulouse last month.
"Ian is recovering well," said head coach Steve Tandy.
"He will be an outside possibility to be in contention for the Leicester Tigers match.
"He is up and around and is moving pretty well so it is something we will now review after the match against Zebre this weekend.
"Ian has been coming through pretty well so hopefully we will have him around during the end of the Heineken Cup group campaign."
But fellow Ospreys lock and regional captain Alun Wyn Jones, who injured a should on international duty against Argentina in the autumn series, is still some distance off a full recovery and will not feature in this month's European contests.