AC Milan striker Ronaldo is expected to return to action in his side's Serie A game against Sampdoria on October 31st, Calcio Italia magazine reported on Thursday. The Brazilian frontman has been sidelined with a thigh injury since July and a misdiagnosis from Milan medical team further delayed his comeback. But he is now ready to resume training with the rest of his teammates in order to be fit for Sampdoria match. The Rossoneri will have to do without Ronaldo when they take on AS Roma at San Siro.