Ben Cotton has signed a permanent deal with Northamptonshire for next year following a successful trial.
The 25-year-old, who spent four years on Derbyshire's books, claimed first-class best figures of 5-48 in the County Championship Division Two victory over Sussex at Wantage Road last month while on a summer contract.
"There's no doubt Ben is very hungry for another opportunity in the county game," said Northants head coach David Ripley.
"He showed his quality in the three first-team matches he played for us after having a fine season in the second XI - as a skilful seam bowler, useful lower-order batsman, slip catcher and captain on occasions.
"He'll be spending the early part of the UK winter working on his fitness before getting stuck in with us in January."
Cotton was surprisingly allowed to leave Derbys with 12 months remaining on his terms earlier this year and will add to Northants' pace bowling options following Richard Gleeson's move to Lancashire.
Giant Zimbabwean seamer Blessing Muzarabani will also join up with the first-team squad at Wantage Road in early 2019 after turning his back on the international game.
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