German press reports have stated that Manchester City and Barcelona are closely monitoring left-back Nathaniel Brown, a player for Eintracht Frankfurt, in preparation for a move to sign him during the upcoming transfer window.

The German newspaper "Sport Bild" reported that the German club will not consider any offer to sell its 22-year-old player for less than 65 million euros, as they are keen to retain one of their key players this season.

Brown is delivering impressive performances in the German league, having contributed to 7 goals in 21 matches in the competition. This has caught the attention of several major European clubs looking to strengthen the left-back position.

The young German defender has a contract with Frankfurt until the summer of 2030, which means the German club will have strong negotiating power if they decide to listen to offers for the player.