London: Manchester United manager Louis van Gaal confirmed on Sunday that he would be interested in bringing Cristiano Ronaldo back to Old Trafford, six years after the superstar left for Real Madrid.

Van Gaal, quoted by several British Sunday newspapers, said: “We are looking at all players, not just Ronaldo. But these players are mostly ungettable.

“With Ronaldo, let’s wait and hope. There is no trainer in the world that doesn’t like him. He plays on the wings and he is fast, and scores goals.”

Ronaldo cost Real Madrid a then world record fee of 80 million pounds when he left England in 2009 but he turns 31 in February and was off the boil in Saturday’s 4-0 defeat to Barcelona where he cut a frustrated figure.

The Portuguese international is a three-time World Player of the Year and is Real Madrid’s all-time leading goalscorer. In Spain, he has won one league title as well as the 2014 Champions League.

During his time under Alex Ferguson at Old Trafford, he helped United win three Premier League titles as well as the 2008 Champions League.

Meanwhile, Van Gaal conceded United are far from pretty to watch after they ground out a 2-1 victory at Watford on Saturday thanks to Troy Deeney’s late own goal.

Van Gaal’s side have been criticised for their conservative style of play under the Dutchman this season, but their latest defensive display paid dividends at Vicarage Road.

They had taken an 11th minute lead through Memphis Depay and, although Deeney’s 87th minute penalty ended a run without conceding of 10 hours, United snatched the points at the death when Deeney turned Bastian Schweinsteiger’s effort into his own net in injury time.

“I have changed the system,” Van Gaal said. “Our positional game was not so good and that was disappointing. I know some people think our positional game is boring but I think it is a way to disorganise the opponent’s organisation.

“I was very satisfied about our defensive organisation. We didn’t give more than three chances away, one in the first half and two in the second.

“Memphis and Jesse Lingard played a very good game. We could have finished the game much earlier. I have to say after the penalty, I thought we gave it away but then you see the spirit of the game.

“We created three chances in a row. It was an injection, the equaliser. I am very proud I am the manager of that team.”

Van Gaal will now assess a depleted team ahead of Wednesday’s home Champions League clash with PSV Eindhoven.

Having been without a host of players including forwards Wayne Rooney (illness), Anthony Martial (foot) and James Wilson (knee), United also lost Ander Herrera and Phil Jones at Vicarage Road.

“We are in a lousy period because there are a lot of injuries,” said Van Gaal. “We had already injuries. Antonio Valencia has been operated on. Luke Shaw, you know. Jones and Herrera are not available for Wednesday.

“The first impression is they are not heavy injuries but we have to play Wednesday.

“Jones has a twisted ankle and Herrera maybe a hamstring injury. Rooney is ill and illness is a matter of days, not weeks.

“I do expect that he shall play Wednesday. He is at home. Tomorrow (Sunday) he comes and then I can say more.

“Martial has a foot problem. It is not so heavy but we have to wait and see.

“Every position is double occupied. It is only now that the striker position is not occupied because Rooney, Martial and Wilson are injured.”

Watford manager Quique Flores was left to rue the own goal that cost his side a point.

“It was very harsh,” he said. “To lose the points is very tough. It was a pity for Troy because he was only in that position because he is so committed all over the pitch.”