England international Jack Clifford will miss the upcoming summer tour of Argentina following a shoulder injury.
The 24-year-old sustained the blow during the start of the season but has now decided to undergo a surgery that will keep him on the sidelines for three months.
This also means Clifford will miss the remainder of fixtures for the Quins in the Aviva Premiership and also possibly the European Champions Cup qualification play-off fixtures late next month.
Harlequins Rugby Director John Kingston expressed disappointment on the news and is confident that Clifford will bounce back after a successful rehabilitation period.
"While it is hugely disappointing for Jack to miss the conclusion of our season, the issue needed addressing immediately.
"I have no doubt Jack will do all that he can to get himself back to fitness and return all the better and stronger for it."
Clifford played two games for England in their recent Six Nations triumph after starting against Wales and coming as a replacement during the encounter against Italy.