Tillakaratne Dilshan will spend two spells with Derbyshire over the coming season after the county announced the signing of the experienced Sri Lanka batsman.
The 38-year-old will be available for up to four NatWest Twenty20 Blast fixtures and two LV= County Championship Division Two matches when he takes the overseas berth from New Zealand international Martin Guptill in June.
Dilshan will return to the County Ground from the Caribbean Premier League at the beginning of August and will be available for every remaining Falcons match until the end of September.
He said: "Derbyshire are an ambitious club with an exciting young team and I'm looking forward to joining them in the NatWest T20 Blast and then returning to help them finish the season strongly.
"I am really pleased with my current form and this makes me confident I can make a strong contribution to Derbyshire this season."
Dilshan, who is currently playing in the World Cup, has competed in 87 Tests for Sri Lanka, scoring 5,492 runs, and his one-day international total comes to 9,796 runs in 312 matches.
He has also plundered more than 5,000 runs across 232 T20 fixtures with the Lions, who won the World Twenty20 last year.