Richard Jones has left Worcestershire by mutual consent and agreed to join neighbours Warwickshire.
The 27-year-old seamer made 41 first-class appearances for Worcestershire in eight years, enjoying his best return of 38 wickets in the 2010 season.
But despite signing a new two-year contract last year he struggled for opportunities this term and spent the last six weeks of the campaign on loan with Warwickshire.
"I have thoroughly enjoyed my time at Worcestershire but feel at 27 years old a new challenge will give me the opportunity to push for a place in both the four-day and one-day formats,” said Jones.
“I would like to thank the county for their support over recent years and for their help in facilitating my move to pastures new."
Speaking about his new club, Jones added: "Warwickshire have been one of the top teams in the LV= County Championship for several years and the chance to work with Dougie Brown, Graeme Welch and a team of top-class fast bowlers is a fantastic opportunity for me."
Worcestershire director of cricket Steve Rhodes added: "Richard has been contracted with the club since 2005 but in recent times the inability to force his way into the side has been frustrating for both Richard and the club.
“While it is never nice to see players leave, Richard feels that a new challenge with another county will be beneficial in order for him to progress in all forms of the game. We thank him for his efforts and wish him well for the future."
His Warwickshire counterpart Dougie Brown said: “Richard is an exciting prospect and is a very good addition to our squad. His arrival will create even more competition for places amongst a very strong bowling line-up.
“He settled in to the squad very well when he joined on trial in August, and Graeme Welch and I are looking forward to working with him ahead of the new season.”