The attacking midfielder was forced off towards the end of the first half of Los Che’s weekend League match with Athletic Bilbao complaining of discomfort and pain in his right knee.
After consultation with Real Madrid – the club that hold ownership on the player – and a change of consulting doctor at the decree of the Madrid side, the player will undergo an arthroscopy this week to determine the course of action.
The minimum period of rest is set at three months, but if it is decided that the player will require an angioplasty – inserting an artificial ligament or donor – then it will be as long as six months before the player can return to action.
Under Unai Emery at Valencia this season, a resurgent Canales was already closing in on matching the number of total appearances he had made in 2010-11 when at Madrid.
Canales is the latest young Spanish talent to pick up such an injury after Real Betis’ Alvaro Vadillo last week. Vadillo underwent an arthroscopy last week, with his worst fears confirmed as he was subsequently ruled out for the maximum six months after he required surgery.