Huddersfield Town will be keeping close tabs on old boy Jordan Rhodes as the January transfer window approaches.
Real Socieded, now managed by David Moyes, are reportedly running the rule over the Scotland international striker.
Town stand to pocket 20% of any profit made by the Lancashire club, who paid them £8m for Rhodes in August 2012.
The 24-year-old has bagged 60 goals for Blackburn after scoring 87 in three seasons at Town.
Rhodes, who was a £400,000 purchase from Ipswich Town in 2009, has also been linked with QPR.
Back in the summer, he signed a new Rovers contract which runs until 2019.