Australia T20 paceman Andrew Tye has been forced to pull out of a stint with English county side Gloucestershire as he continues his recovery from shoulder surgery.
Tye was ruled out of the Indian Premier League last month after dislocating his shoulder while fielding for Gujarat Lions.
The death-bowling specialist had signed on for a second season with Gloucestershire to play in England's domestic T20 competition, but will now miss the tournament as he continues his rehabilitation from surgery.
"Andrew went home to Australia and had surgery and now he's got to rehab his shoulder so that he can come back to full fitness," Gloucestershire head coach Richard Dawson explained.
"It's disappointing for us because he performed well last year, and for him because he was doing well in the IPL.
"We obviously wish him a speedy recovery."
Having sat on the bench for the two preceding seasons of the lucrative IPL, Tye had a debut to remember last month.
The Western Australian completed a hat-trick against Pune and finished with 5-17 from his four overs in a match-winning effort, and sat equal third on the IPL leading wicket-takers list when he flew home.
Despite only playing six games out of a possible 14 for the tournament, Tye finished as Gujarat's leading wicket-taker with 12 scalps at 11.75, while his economy rate of 6.71 remains the fourth best among bowlers with at least 10 wickets.
Dawson admitted replacing a bowler of Tye's calibre may prove tricky, though Australian run-machine Michael Klinger remains on Gloucestershire's books for the domestic season.
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"The Champions Trophy and the Caribbean Premier League complicate recruiting a replacement but we'll get our heads together and put a plan in place," the coach said.
"If we go for a bowler to replace Andrew it helps to manage our bowlers through a tough period, and if we register a batsman it changes the balance of the team.
"We'll look at all the available options and do what is best for the squad."
Gloucestershire begin their T20 campaign in July.