Martial's agent confirmed that the forward wanted to leave Manchester United earlier this summer and Jose Mourinho has been publicly critical of the Frenchman in recent months.
'Sorry but my family will always come first...
Mourinho was expecting the 22-year-old to rejoin the squad in the USA when he gave him permission to leave last week. Alderweireld is a target for Manchester United while Dembele has been linked with Inter Milan.
United have reportedly held talks over Toby Alderweireld, Harry Maguire and Yerry Mina in recent weeks but Boateng has also been touted as a prime target by the media and it seems the Manchester giants have been given the chance to sign the 2014 World Cup victor.
Some are even discussing which manager would take over at Manchester United if Mourinho chose to leave the club, with some big names mentioned among the bookies favourites.
It needs to be the team with the most quality, like Manchester City last season, they were fully equipped and deserved to be the Premier League Champions.
There have been reports that Bayern could be in the market for a swap deal involving Martial and centre-half Jerome Boateng.
"We have exchanged messages and I've seen a picture", said Klopp on the topic.
ZINEDINE ZIDANE will be top of Manchester United's wish list if Jose Mourinho departs. However, Spurs are also building a new ground that will make them richer, so they too have no inclination or need to ship out their best players.
He sees himself as a central midfielder, who is "flexible and also willing to play in a different position".
Manchester United close out their pre-season with a friendly against Bayern Munich at the Allianz Arena, before opening their Premier League season at Old Trafford against Leicester City.