However, it looks like Man Utd have stolen a march on Arsenal as the Sun are citing a report from Sports Bild that claims the Red Devils have offered to pay £22.3m to take Boateng to Old Trafford before Thursday's deadline.
It was United boss Jose Mourinho who sold him to United, and the manager may be open to doing so again if it meant landing Alderweireld.
Boateng spent a season with Manchester City and fans speculated whether this could be the reason for his reluctance to move to Old Trafford.
Bayern Munich winger Arjen Robben is hoping the club's management will make the right decision with regards to Jerome Boateng's future. The 29-year old Germany worldwide has been at the 28-times German champions since joining from Manchester City in 2011.More news: Transfer: Manchester United in talks to sign Chelsea defender
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"They were linked with Harry Maguire, they were linked with Alderweireld, the Tottenham Hotspur defender". The defender is reportedly valued at more than 50 million euros.
Over the last few weeks, we've already seen several watermarked images which supposedly show the new kit doing the rounds on social media.
Willian has been the subject of numerous transfer rumors this summer after a so-so performance at the World Cup in Russian Federation.
United brought in Fred from Shakhtar Donetsk for £53.1m, Diogo Dalot from Porto for £19.8m and Lee Grant from Stoke for 1.5m this summer.
Last season his Manchester United side then finished second in the Premier League, with their best points total since Sir Alex Ferguson's retirement, as well as losing in the FA Cup final to his former club Chelsea.