Soriano could be called up as a replacement for David Villa.
That is one of the possibilities we're looking at," said Guardiola. "But the downside is that if we promote him to first team, there's no going back for him. He has shown that he can play in the first division, and he deserves a chance after all he's done in the reserves, he has a lot of potential, he fits into the team well.
"We have three weeks to decide. We'll see how this month goes, and how he adjusts to things."