Manchester United have had their bid for Kieran Trippier rejected by Atletico Madrid, according to Football Insider.
Football Insider says a source has revealed that United made an offer of around £10m for the Englishman.
Atletico are willing to sell, but United will have to increase the offer to complete a transfer to Old Trafford.
The 30-year-old is currently with the England squad preparing for the Euros.
United are looking to improve their squad ahead of next term after finishing second in the 2020/21 Premier League season.
Trippier will provide competition for Aaron Wan-Bissaka should the transfer be completed.
Do you see United completing this deal?