Somerset overseas professional Matt Renshaw suffered a hand injury in the recent County Championship match against Surrey at Guildford and as a result he will be returning home to Australia sooner than planned.
Renshaw has been in outstanding form for the County scoring over 500 Championship runs at an average of 51.30 this season.
Somerset coach Jason Kerr said: “Matt sustained a fracture on the top of his finger.
“After speaking with Cricket Australia it has been agreed that he will return to Australia sooner rather than later. Sadly for us that means it is the end of his time with Somerset this season.
“It’s a huge blow to us because he has been brilliant both on and off the field. He fitted into the dressing room very well and a player of that calibre is going to be missed.
“However, it does create an opportunity for somebody else to come in and step up, so from that point of view it’s quite exciting.”
The left-hander has two months to recover for his next playing assignment, the Australia A tour of India, where Renshaw is set to feature in both one-day and four-day matches.
Renshaw replaced suspended Cameron Bancroft for the stint at Somerset having come in for the perpetrator of the now infamous sandpaper ball tampering in Australia’s fourth Test against South Africa.
Players expected to have “a bridge to the outside” if international action is given the go-ahead.
England hope to squeeze in a near full international campaign despite the lengthy setbacks faced by the sport.
England have named 14 uncapped players in a 55-man training group.
A total of 55 players have been invited to work under ECB guidance in the coming weeks.
The swing bowler completed the landmark at Headingley.
But the ICC has rejected claims the tournament will be postponed, insisting a number of contingency plans are being considered.
He will not return from his family home in Tasmania even if the delayed season gets under way later this summer.
No domestic cricket can take place until at least August.
An expanded training group of up to 45 is due to be named on Friday.