Mohammad Amir is to join newly-promoted Essex for the second half of the 2017 season.
The left-arm seamer, who has 140 international wickets to his name across all formats, will arrive following the conclusion of the ICC Champions Trophy, which is being staged in England, and will be available from June 19 in both the Specsavers County Championship and NatWest T20 Blast.
"I am very excited about becoming part of the Essex family," the Pakistan fast bowler, 24, told Essex's official website.
"(Head coach) Chris Silverwood and Ronnie Irani have both been very supportive over the summer. I'm hoping I can carry on Essex's success this season and achieve more for the club in 2017."
Silverwood added: "We are thrilled that Mohammad has decided to join us for half of the 2017 campaign. He showed a real desire to be a part of the club and the fact we have him for two competitions is a real bonus.
"He is still only young but has proved himself at International level already, so it is a real coup to get this signing completed."
Amir returned to the sport in September 2015 having been banned for five years for spot-fixing after bowling no balls to order in the Lord's Test against England in 2010, an offence for which he was also handed a six-month prison term.
However, since returning to the international scene in January, Amir has established himself as a key part of the Pakistan side in all formats, taking 16 wickets on this summer's tour of England to help his side earn a 2-2 draw in the Test series.