Alex Song is delighted Arsenal striker Robin van Persie is available for their clash with Barcelona.
The Dutchman has scored 11 times in nine appearances and Song knows a firing Van Persie could be key to success against the Spanish champions.
Song told the Official Arsenal Matchday Programme.: "I've always said that Robin is one of the best strikers in the world - he's had bad injuries but has come back so well.
"When Robin is 100 per cent fit, you know he's dangerous at any time. He's scored a lot of goals in the past few weeks and helped the team in other ways; it's very important to have him fit, because he's one of the guys who gives you a real chance."
