Manchester United have suffered a blow in their pursuit of RB Leipzig defender Dayot Upamecano after it was revealed the defender had a £89m release clause, according to reports.
The 19-year-old joined the Bundesliga side back in January and has impressed this season with a series of imposing performances at the back.
He has attracted attention from the likes of Arsenal, AC Milan and Barcelona, with the latter looking for somebody to replace Javier Mascerano and partner Samuel Umtiti.
Any 19-year-old with a £89m release clause deserved to be observed closely, and the early signs suggest Upamecano will be a name that becomes familiar to the footballing world over the next few years.
He already has the physique to compete at the highest level and impressed during a 3-2 win over Porto in the Champions League earlier on this season, displaying a level of composure on the ball that belies his age.
But with the likes of Marcos Rojo, Phil Jones, Eric Bailly, Chris Smalling, Victor Lindelof and Axel Tuanzebe all battling for a place at the back under Mourinho, perhaps splashing out £89m on another defender would be slightly foolish.