The 33-year-old joined I Rossoblu in the summer of 2015 and made 33 Serie A starts in his first season at the club.
However, the former Parma shot-stopper complained of feeling out of breath after the opening match of this season and tests showed some cardiac irregularities.
He has not played since and underwent further tests to determine the extent of the problem, but doctors are now happy that it was only a ‘passing phase’.
Mirante was given the green light to resume training several weeks ago and is now back in the squad for this weekend’s clash with La Dea, although it remains to be seen if he starts.
Colchester will hand late fitness tests to Ryan Jackson and Brandon Comley prior to their clash with Yeovil.
Arsenal secured their place in the quarter-finals of the Europa League following their 3-1 defeat of AC Milan at the Emirates Stadium on Thursday.
Danny Welbeck scored twice against AC Milan to toast his England recall by sending Arsenal into the last eight of the Europa League.
Ipswich striker Joe Garner will not play again this season after it emerged he suffered a fractured skull against Sheffield United last week.