Manchester City are among several clubs including Dortmund, Chelsea and Leicester in monitoring Bukayo Saka's situation at Arsenal, according to 90min.
The 18-year-old is yet to agree a new deal at the club, with his current deal set to expire at the end of next season.
Saka made his first-team debut for Arsenal last season and was enjoying a meteoric rise in 2019/20 prior to the coronavirus crisis halting all football.
He has played 29 times in all competitions this season and has been the club's first-choice left-back since December, with Kieran Tierney injured.