German World Cup winner Bastian Schweinsteiger's future at Manchester United is in doubt following Jose Mourinho's appointment as manager, BBC Sport reports.

Mourinho has already made three big summer signings and is closing in on Juventus midfielder Paul Pogba.

Schweinsteiger, 31, looks like being one of nine players who may leave.

The midfielder, who has announced his international retirement, trained on his own as United's full squad trained together for the first time.

Forwards Adnan Januzaj, Will Keane and James Wilson, midfielder Andreas Pereira and defenders Cameron Borthwick-Jackson, Tim Fosu-Mensah, Tyler Blackett and Paddy McNair are also reportedly set to be made available, though some may only leave on loan.

With all the other senior players who were absent from the recent tour of China present, Schweinsteiger's absence from Thursday, July 29's squad training session is being viewed as significant.

United paid a reported £14.4m to sign him from Bayern Munich 12 months ago but the move did not work out as planned.

Injury restricted Schweinsteiger to 31 appearances and he was involved in just seven of United's final 34 games, including missing the FA Cup final win over Crystal Palace.

Since his arrival, Mourinho has signed Villarreal defender Eric Bailly for about £30m, midfielder Henrikh Mkhitaryan from Borussia Dortmund for an undisclosed fee and former Paris St Germain striker Zlatan Ibrahimovic on a free transfer.