Barcelona are reportedly interested in signing Atletico Madrid midfielder Saul Niguez.
The 25-year-old has made 268 appearances Atletico since debuting in 2012, including 18 in all competitions during the 2019-20 campaign.
The Spain international has a contract at the Wanda Metropolitano until the summer of 2026, having put pen to paper on a nine-year deal ahead of the 2017-18 campaign.
Manchester United were linked with the midfielder during the summer, though, and according to reports in Spain, Barca are now weighing up a swoop ahead of the 2020-21 season.
Saul played at left-back during Sunday's clash with the Spanish champions at the Wanda Metropolitano, where Lionel Messi came up with a late winner for Ernesto Valverde's side.
The former Real Madrid youngster has operated across the midfield during his time with Atletico, while he has also previously turned out as a central defender.