Barcelona have intensified their interest in signing Alexander Isak of Real Sociedad. 

Martin Braithwaite has been Barca's only No. 9 since September, when they sold Luis Suarez to Atletico Madrid in a deal that could be worth up to €11 million.

Isak, 21, is a player who has been on the club's radar for a while and his performances since moving to Spain in 2019 have impressed Barca scouts, who believe similarities between Real Sociedad and Barca's playing styles would ease his adaption.