Keane awaits Euro punishment after red card in Porto
Keane is automatically ruled out of the Champions League second leg between the two sides at Old Trafford on March 9 after he was red-carded for treading on keeper Vitor Baia four minutes from the end of Porto's 2-1 victory.
However, the Irishman could receive another two games on top if UEFA's disciplinary committee believe the offence to be serious enough to warrant a punishment upgrade.