Graphic: wide of the mark: Ronaldo's dip in form

Sir Alex Ferguson will consider allowing Cristiano Ronaldo to return to Portugal to recharge his batteries before Manchester United’s Barclays Premier League showdown with Chelsea on January 11. Ronaldo has cut a snarling, fractious figure in recent weeks, having been involved in a series of altercations with opponents, but the idea of a short break is regarded at Old Trafford as a routine course of action from which the winger might benefit.

Ferguson has often given his younger overseas players dispensation to return briefly to their homeland during the winter months, with Anderson and Carlos Tévez back in Brazil and Argentina respectively this week, and now would appear the ideal time to allow Ronaldo a brief rest, particularly given that United’s next two matches are against Southampton in the FA Cup third round on Sunday and Derby County in the Carling Cup semi-final, first leg a week today before they face Chelsea at Old Trafford. Ronaldo may be involved against Southampton, but he is almost certain to sit out the Carling Cup tie.

Ronaldo could be said to be in need of a change of environment, having struggled for his best form in recent weeks and he has also been involved in a succession of spats with opponents. The Portugal winger angrily squared up to Emanuel Pogatetz at half-time during United’s 1-0 victory over Middlesbrough on Monday, having been fortunate to escape punishment for kicking out at Scott Brown, of Celtic, Michael Dawson, the Tottenham Hotspur defender, and Andy Wilkinson, of Stoke City. The dispute with Pogatetz continued into the players’ tunnel at Old Trafford, with Ronaldo furious that the defender grappled him to the ground at a corner in the final minute of the first half.

Ferguson would be reluctant to acknowledge a link between Ronaldo’s recent antics or form and any decision to rest him, but even on United’s television station on Monday night the player’s conduct was a matter of debate. Lou Macari, the former United player, said that “the Ronaldo of last season” had not been seen for several weeks and that it is essential he finds his best form during the second half of the campaign, with his team seven points behind Liverpool in the Premier League, albeit with two games in hand.

Ronaldo missed pre-season training and the opening weeks of the campaign while recovering from an ankle operation, having also spent much of the summer distracted by his planned transfer to Real Madrid, and, while he scored seven goals in his first nine appearances after returning to the starting line-up in September, his form has dipped markedly in recent weeks.

Anderson, the midfield player, is expected to return to the United squad against Southampton on Sunday, having flown to Brazil after his team’s success in the Club World Cup in Japan before Christmas. Tévez is due back in Manchester at the weekend, having been given permission to return to Argentina for what Ferguson called a “family issue”, but it is not clear whether he will be back in time to figure in the FA Cup tie. “When their parents and families are far away, you have to be patient with them,” Ferguson said.

United also had to be patient against Middlesbrough, with the only goal of the game coming through Dimitar Berbatov with just 21 minutes remaining, but the forward has echoed Ferguson’s belief that profligacy in front of goal is the main threat to his team’s ambitions this season. “Maybe we must work on our concentration in the final third of the field,” Berbatov said. “The boss tells us all the time not to lose our concentration because it will be very important in the crucial games coming up. We will keep working on that and, as long as we keep making chances, hopefully the goals will come.”