Manchester United midfielder Bastian Schweinsteiger says the club will be his "last in Europe".
The German issued the statement on his Twitter, and thanked United fans for their support.
The 23-year-old, who became the world's most expensive footballer when he sealed an £89 million return to Old Trafford, missed the start of a season with suspension and has only been training with his new club for 11 days after an extended break at the end of his Euro 2016 excursion.
However, Mourinho is confident he is in a condition to face the Saints, even if he is unlikely to last the 90 minutes.
We played with some players against Leicester with less training than Paul.
We had guys coming back from the Euros, who were on holidays, had one week of training and they played against Leicester (in the Community Shield), not at the top of their game, not ready for 90 minutes but they played and performed and it was a good way for them to accelerate that process. In this moment they are in the building-up process of their form.
Paul has been training for more than a week, around 10, 11 days, adaptation is really easy because he is a boy from here, he knows the club, he knows everybody. There's no need for time to adapt.
He needs time to build his condition and his understanding in the way the team tries to play. Yes, he's ready to play. Ninety minutes? I don't believe. Super performance? I don't believe. But in condition to accelerate his process of integration in the team, that's for sure.
Cheshire Police has charged a man in relation to the attempted burglary on Manchester United captain Wayne Rooney's house in Prestbury.
Robert Leslie McNamara, 24, of Newby Farm Crescent, Scalby, Scarborough, was arrested on Tuesday, August 9, on suspicion of attempted burglary.
A Cheshire Police spokesperson said:
Following questioning McNamara has been charged with Attempted burglary of a dwelling with intent to steal; he has been remanded in police custody and is set to appear at South and East Cheshire Magistrates later today, Wednesday 10th August 2016.
The charge relates to an attempted burglary that occurred at approximately 9.00pm on Wednesday 3rd August at an address in the Chelford Road area of Prestbury.
Manchester United finally have their man - the world's most expensive footballer.
They've confirmed the signing of Paul Pogba for £89 million.
It was a very modern transfer - instead of the traditional football shirt and scarf to welcome him back - United released a clip of him in a rap video.
A world record fee, eclipsing the £85 million Real Madrid paid Tottenham for Gareth Bale three years ago.
Pogba, who's 23, says he's delighted to rejoin the club. And no wonder, with reports he'll earn more than 200 thousand pounds a week.
David Chisnall has the story.
Pictures courtesy of MUTV.
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UK rapper Stormzy has released a clip of him dancing alongside Paul Pogba to celebrate the 23-year-old's move to Old Trafford.
Pogba signed a five-year contract with the option of a sixth season after United agreed a deal with Juventus understood to be worth £89million.
The deal to bring Paul Pogba back to Old Trafford is the most expensive in history.Read the full story ›
Paul Pogba has arrived in Manchester ahead of his world record breaking move to Manchester United.
The 23-year-old flew into Manchester Airport before travelling to Carrington where he will undergo a medical this afternoon.
The France international is expected to become the first player to cost more than £100m. Once confirmed, it will be the midfielder's second spell at Manchester United after he left for Juventus four years ago.
The plane bringing Juventus midfielder Paul Pogba to the UK has arrived at Manchester Airport.Read the full story ›
Manchester United manager Jose Mourinho says the 23 man squad he'll be working with this season will be completed by August 14th.Read the full story ›