The Glazer family put the club up for sale last November, but the process has been at a stand-still for months.
Chemical company Ineos chief Sir Jim has been battling it out with Qatari banker Sheikh Jassim to take over the Premier League giants.
Now, the British billionaire has shown he's not giving up on his pursuit.
According to Bloomberg, Ratcliffe has reworked his offer to revive his takeover hopes.
The report states he's looking to address concerns on the bid, working with advisers to help ease the minds of the club's minority shareholders including Lindsell Train, Ariel Investments LLC and Eminence Capital.
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The 70-year-old made a bid for 69 per cent of the club earlier this year for around £5bn.
Sheikh Jassim also put in a bid worth the same amount, but the process still remains in deadlock.
talkSPORT understands Joel and Avram Glazer remain keen to retain some of their shares in the club. Their valuation of at least £6bn remains.
Man United fans protested against their owners on Monday night, flying a '#GlazersOut' banner over the Glazer family's Tampa Bay Buccaneers stadium.