Manchester City are among the clubs exploring the possibility of signing Ilkay Gündogan amid doubts over his future at Barcelona, sources have told ESPN.
Saudi Arabian clubs including Cristiano Ronaldo's Al Nassr are also interested in the midfielder, who could leave Barcelona after just one season.
A source has told ESPN that Barcelona manager Hansi Flick wants Gündogan, 33, to stay, but club chiefs are willing to let him leave if the right offer comes in.
Gündogan, who made 51 appearances for the Catalan club last season, has two years remaining on the contract he signed when he left City last summer.
City are considering signing another midfielder after allowing Kalvin Phillips to join Ipswich Town on a season-long loan deal.
The club is also considering signing a striker following the departure of Julián Álvarez to Atlético de Madrid and the injury to Oscar Bobb, which will keep the Norwegian international out of the team for more than three months.
City wanted to keep Gündogan last summer but the German, who announced his international retirement on Monday, has turned down several contract offers.
He eventually agreed to join Barcelona despite interest from Arsenal. Gündogan left City after making more than 300 appearances in seven years and winning the Premier League five times.
Gündogan, a key player for Barcelona last season, has seen his place in the team come under pressure following the arrival of Dani Olmo from RB Leipzig this summer.
Meanwhile, a source has told ESPN that City are unlikely to consider offers for captain Kyle Walker despite interest from Al Hilal.
Walker almost left the Etihad to join Bayern Munich a year ago but instead signed a contract that will keep him at the club until 2026.
A source has told ESPN that Al Hilal are keen to sign a full-back if they can offload former Nottingham Forest defender Renan Lodi to make room for another foreign player in their squad.
However, City do not want to lose Walker just 10 days before the transfer deadline and any overtures will be rejected.