Montero has been linked with City earlier this summer but all hopes of a deal seemed to have faded.
But now there are reports that a £3m move for the 23 year old might be back on.
It's claimed Montero is sorting a visa to come to the UK for a medical. With 30 caps for his country there should be no problems with a work permit.
See his amazing hat trick for Morelia
Source: Cardiff City Online