He has spent the last few months hobbling around on crutches - even while attending the BRITs.
But One Direction's Niall Horan finally ditched his walking aides in favour of some good, old fashioned exercise, this month.
The 20 year-old star was spotted training with Chelsea FC after being given permission by the club's manager Jose Mourinho.
The Special One, whose daughter Matilde is a fan of the band, has allowed the 20-year-old to use the club's Cobham base to recuperate after knee surgery.
Horan was spotted wearing personalised training gear and showing off his skills as first team stars including John Terry, Fernando Torres and Willian were put through their paces just metres away.
Niall, who had surgery on his knee while touring the US in 2013, is hoping to be back on top form by the time One Direction play nationwide UK dates in April.
Horan first met Mourinho when the band enjoyed a private training session with his Real Madrid side in May 2013.
Since then they have kept in contact and forged something of an unlikely friendship.
Louis Tomlinson, Horan's One Direction band-mate, made his debut for Doncaster Rovers in a reserve team match against Rotherham late last month.
The Doncaster-born singer, who joined Rovers on a non-contract basis last summer, made a 25-minute cameo in front of more than 5,000 fans in order to support local charity Bluebell Wood Children's Hospice.
One Direction's 'Where We Are' stadium world tour in 2014 launches next month in Bogotá, Colombia. The tour has announced dates so far in Europe, South America, Australia, New Zealand and North America.
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