Balotelli and Richards' bust-up unimportant - Mancini

Roberto Mancini laughs off a training ground altercation between Mario Balotelli and Micah Richards as "nothing special" and says the "stupid" incident was "not important".

Ahead of Sunday's clash with Arsenal, Mancini states opposing captain Robin van Persie is an "incredible player" and that his side will need to "work hard" to get a result against the in-form Gunners.