Sir Alex Ferguson urges caution ahead of Manchester United's Champions League campaign

The Red Devils have been handed a favourable group stage draw but, having gone out at this round last term, the boss has warned his players of the threat the competition can hold

Sir Alex Ferguson has called on his Manchester United charges to be fully focused on the task ahead and not become complacent in this season's Champions League group to avoid repeating the "stupid errors" of last year's campaign.

United were handed a fairly favourable draw on Thursday afternoon, with Braga, Galatasaray and CFR Cluj in Group H, but after slip-ups against Basel last year Sir Alex is determined not to ask any opposition lightly this time around.

And Sir Alex has highlighted the challenge of Turkish giants Galatasaray this season following a series of famous battles with them down the years.

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"We have the experience of playing against Galatasaray in the past and we will always remember the 'Welcome to Hell' banners. So it's always a difficult type of match,” he told the club’s official website.

Having also had numerous encounters with Porto, Benfica and Sporting Lisbon in Europe, the Scot is well aware of the threat posed by Portuguese opposition and believes this will stand his players in good stead when they face Braga.

He continued: "We have drawn Portuguese clubs a number of times over the past few years - the likes of Benfica, Sporting Lisbon and Porto - so we have the experience of playing in Portugal on many occasions.

"Braga are one of the improving teams in that country."

Romanian minnows Cluj complete the look of Group H, but Sir Alex is under no illusions as to the task his side face against any team in this year's group.

"Obviously, we've never played Cluj before but, after the experience of last year, we don't want to make any stupid errors this time,” he concluded.

“We will play our strongest team to make sure we get through."