English Premiership club Saracens completed the signing of Wales star Gavin Henson from the Ospreys on Thursday. Henson was given the green light to join Saracens after the Ospreys on Wednesday 'reluctantly agreed' to release him from the remaining seven months of his contract at the Swansea-based outfit. The 28-year-old has been out of action since going on unpaid leave from the Ospreys 18 months ago following the latest in a series of injury setbacks. Saracens have not yet revealed the length of Henson's contract or when he might make his debut, but he trained with his new club for the first time earlier this week. It is not yet known if Henson's commitment to appear on the current series of BBC television's Strictly Come Dancing will delay his return to action. Saracens insist they accept Henson's desire to stay involved in the programme and a statement said: 'The player's path back to full match fitness will dovetail with his participation in the show.' Meanwhile, Henson, who won the last of his 31 Wales caps during the 2009 Six Nations Championship, claims the positive atmosphere at Saracens has already refreshed his appetite for the sport. 'They have created a special vibe at the club, and to be honest, just being around them has rekindled my enthusiasm for the sport.' he said. 'They are bold and innovative, and they're positive and ambitious. 'I know I still have so much to give to rugby, and I can't wait to get back on the field, playing for Saracens and hopefully for Wales. 'Now it's time to start working hard, getting back to match fitness as soon as possible and then to let my rugby do all the talking. 'I am still committed to Strictly Come Dancing because I am contracted to that, which is fine. I am enjoying it. 'I still need a few weeks of rugby training, which I will do in the mornings and do the dancing in the afternoons. 'Once that finishes, it should tie in with me playing rugby again with Saracens. I have no idea of my start date in rugby. I have to see what I am like in training with my core skills. 'It will be a decision between me and (rugby director) Brendan Venter, on when it is right for me to start playing again. 'I've been out for a while, for 18 months, but the skills are still there.' Saracens signed Henson after their South African number 10 Derick Hougaard suffered a season-ending Achilles injury during the European Cup defeat against Leinster at Wembley earlier this month. Saracens rugby director Brendan Venter added: 'Gavin is a special talent. We are delighted he has chosen to launch the next phase of his career with us. 'We believe he will enjoy our environment, on and off the field, and that will be great news for our supporters and for Welsh rugby.' 