Deportivo forward Riki has suffered a second degree sprain to his right ankle ligaments during the club's 2-1 loss to Osasuna.
The 32-year-old striker was replaced with 10 minutes to go at El Sadar on Sunday afternoon after twisting his ankle heavily.
The former Getafe is set to have a scan tomorrow to assess the damage, but reports suggest he could be out for anywhere between two and six weeks.
