The Colombian front-man has been linked with a lot of European top clubs in recent months after fine fine form in front of goal for Porto, as he scored 34 times in 43 appearances last term.
Chelsea have perhaps shown the most interest from England, though Arsenal and Liverpool have also been monitoring him lately.
Although City don’t lack quality options upfront at present, there are some doubts over the futures of Edin Dzeko and Sergio Aguero, and Manuel Pellegrini believes Martinez could be a useful addition to his squad, according to Sports Direct News.
Hektor Säll