The world's most expensive player was named in Chris Coleman's squad for the games against Macedonia and Belgium even though Coleman admitted the winger would not play in either match.
Bale, who missed the midweek UEFA Champions League win over FC Copenhagen, is struggling with a thigh injury and Ancelotti wants him to remain in the Spanish capital to recover in time for the La Liga game with Malaga on October 19th.
"He will stay here to train for 15 days and will be ready for the next match," said Ancelotti.
"We have to co-ordinate with Wales but I think he'll stay here.
"That way he'll be ready for the match against Malaga after the break."