According to Goal.com, Manchester United are very much interested in signing Federico Valverde from Real Madrid, and to that end, they're willing to offer the services of Kobbie Mainoo to the Spanish giants. But Real, who have indeed been keeping an eye on Mainoo as they form their plans to rebuild their midfield section after the departures of Toni Kroos and Luka Modric, have no intention of selling Valverde in the foreseeable future.