Sir Bobby Charlton has branded Jose Mourinho 'silly' and 'senseless' for complaining there is one rule for Manchester United and another for Chelsea where penalties are concerned.Chelsea boss Mourinho was incensed that Manchester United avoided two spot-kicks being awarded against them in the past week, while his own club had a handball appeal rejected at Newcastle on Sunday. Both Sheffield United and Middlesbrough had what appeared strong claims for penalties waved away in their Premiership trips to Old Trafford, prompting Mourinho to say: 'It looks like there is a rule in football that it is forbidden to give a penalty against Manchester United.' United boss Sir Alex Ferguson yesterday refused to be drawn into a war of words with his Chelsea counterpart but Old Trafford legend and club director Charlton told BBC Radio 4's Today programme: 'It's a little bit silly really. 'Considering he's a very intelligent man, to come out with statements like that is a little bit silly. 'It's a nonsense really. We've played in so many matches this year when we've not had the decisions and they've been quite obvious really. 'But you get on with it, you move on. I thought it was a little bit senseless.It makes good copy for the media and he's obviously a marvellous coach. But sometimes, really, I think some of the statements are quite unnecessary.'