"I've got a dossier on a few players in the world who would enhance our team. If we can target players like Zarate then we can take the club forward and won't be battling relegation each year."
Zarate's agent Christian Otero said: "Al-Sadd want more than they paid for Mauro but another loan deal might be possible.
"We haven't set any date for any talks yet but I hope we can reach an agreement and speak soon.
"Mauro has captured the attention of other clubs as people can see he will be a top, top player. His performance against Manchester City last weekend is the normal sort of level for him."
Birmingham City's trip to Wigan on Saturday is live on BBC WM 95.6FM
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