Veteran goalkeeper Cesar Sanchez is to complete his move from Tottenham Hotspur to Valencia on Friday, and could make the side to visit struggling Real Mallorca on Sunday.
The 37-year-old will sign until the end of the season and will compete for a start with youngster Vicente Guaita in the absence of injured first-choice keeper Renan.
Striker David Villa is a doubt with a thigh problem after being substituted during their midweek King's Cup win over Sevilla.
Leaders Barcelona are expected to have top scorer Samuel Eto'o back when they host Numancia on Saturday after the Cameroon striker was sent for an early shower in Tuesday's training session, and then left out of their midweek Cup match.
"He lost his temper for a moment, nothing more. It happens in any job and the only effect it will have is to bring us all closer together," midfielder Xavi said.
Real Madrid's Italy defender Fabio Cannavaro is likely to recover from an ankle knock in time for the visit of Deportivo Coruna on Sunday.
Spanish media reported former Spain international playmaker Juan Carlos Valeron was set to make a rare start for Depor after three injury-interrupted years.
Villarreal midfielder Robert Pires has said he is keen to extend his contract, which expires in June, and has no problem with his recent role as a second-half substitute, ahead of their home match against bottom club Osasuna on Saturday.
"The season is very long and it gives me time to rest and prepare for what is to come in the second half of the campaign," the France international said. "I have spoken with the coach and when he explains everything to you there is no problem."
The Spanish football federation (RFEF) have rejected Osasuna's appeal to have Juanfran's remaining yellow card overturned from last week's 3-1 defeat at Real Madrid, when he was sent off.
Juanfran was shown yellow cards for two apparently legitimate penalty claims, the first for protesting and the second for diving. The RFEF admitted the referee had made a mistake and rescinded the card for diving earlier in the week.
Sevilla are a home to Racing Santander on Sunday and have Serbian defender Ivica Dragutinovic and Argentine midfielder Aldo Duscher back in contention. Winger Jesus Navas and striker Frederic Kanoute are doubts.
Atletico Madrid are seeking their first win of 2009 away to Malaga on Sunday, and will have playmaker Maniche back from a two-match suspension. Captain Maxi Rodriguez and full back Mariano Pernia are injury doubts.
