Alexis Sanchez’s three-and-a-half year career at Arsenal is shortly coming to an end.The Chilean’s move to Manchester United in imminent after the Gunners agreed a fee with their Premier League rivals.According to the Daily Mail, United will pay Arsenal £20 million and Sanchez’s agent, Fernando Felicevich, £15m.Sanchez will also be quids in. The 29-year-old will earn £450,000-per-week over the course of a four-and-a-half year contract.The figures are remarkable. Man United have saved a considerable amount in Sanchez’s transfer fee, owing to the fact that his contract expires in the summer, and they’ve seemingly put those savings towards his wages.

Reports that Sanchez has trained with Arsenal's U18s

There have been widespread reports that Sanchez hasn’t trained with Arsenal’s first team this week as he prepares to leave the club.

The Mirror said that he trained on his own on Thursday; the Mail wrote that he joined the Under-18 side.

Arsenal's photographer reveals the truth

He was back training with the first team on Friday morning and according to Arsenal photographer Stuart MacFarlane, that’s where he’s been all week.

“Alexis Sanchez trained with the 1st today as he has done all week. #dontbelieveeverythingyouread,” MacFarlane wrote on Twitter, along with a photo of Sanchez in action.

He also laughed at the Mail's story.

Sanchez is still expected to leave the club but MacFarlane’s tweet proves Arsene Wenger isn’t making his exit an ugly one by forcing him to train alone.

Wenger: RVP leaving hurt more

This will be the second time Wenger has sold a huge name to Man United in the space of less than six years, Sanchez following Robin van Persie to Old Trafford, but the Arsenal boss doesn’t believe it will be as painful this time around.

“We took Van Persie when he played in the reserve team at Feyenoord,” Wenger said, per Sky Sports. “We [put in] long work with him.

“When you get them there and, after they leave, that is the most painful."

Wenger will be acutely aware of the furore that will be aimed his way should Sanchez help the Red Devils win a Premier League title, just as Van Persie did.

But he hopes that Henrikh Mkhitaryan’s imminent arrival will help to soften the blow of Sanchez’s departure.

"It will be other-way traffic as well and that makes the whole thing a bit smoother, maybe a bit less disappointing,” he added.

"We lose a player, yes, but we could gain another player. I think one would replace the other."