Milan have made an inquiry about Cagliari's explosive midfielder Radja Nainggolan, according to La Gazzetta dello Sport.
It's no secret that Massimiliano Allegri is keen to bring some of his former players to San Siro from Cagliari where he coached for two years.
Milan have already been linked with Andrea Lazzari, Federico Marchetti and actually own 50 per cent of the rights to Davide Astori.
However, Nainggolan's stock has risen partly because Milan see the 22-year-old Belgian as a cheaper alternative to Santos' Ganso.
La Gazzetta understands Adriano Galliani has already been in touch with Cagliari President Massimo Cellino to register his interest.
Milan have eight players whose contracts are due to expire this summer, the majority of whom are midfielders, hence the need to reinforce the position.
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