Derbyshire have given batsman Hassan Adnan permission to talk to other counties about a possible move.
Adnan has had limited opportunities this season
The 33-year-old right-hander is in the final year of his contract and wants to find out his options for next season.
Adnan was awarded his Derbyshire cap in 2004 after scoring 1,380 runs in his first full season for the club at an average of over 50.
He remained a regular fixture in the side for the next two years but has had limited opportunities this season.