Mostovoi returns to Celta
Mostovoi had been back in Russia recovering from an Achilles injury, but also had to endure a separation from his wife.
Celta have been without the experienced international for a significant chunk of last month, due to the Achilles blow that ruled him out of the club's Uefa Cup tie against Celtic.
Mostovoi had been expected to rejoin his team-mates a few days ago, however the player needed an extra five days to sort out his problems.
The player has already been ruled out of the club's La Liga clash against fellow title-challengers Deportivo La Coruna at the Riazor on Saturday.