 He later signed for Qatari side Al-Sadd in 2007, where he played only six months before transferring on loan to Birmingham City in England.However, after Birmingham's relegation, Zárate was loaned out again, this time to Lazio in Italy, where he won the Coppa Italia.His move to Lazio was then made permanent for a fee of around €20 million, with a €60 million buy-out clause.