Keane will join in a consultancy role, according to The Daily Mail, but will handle transfer and contract negotiations after taking over some of Judge’s commitments.
He is also brother to Wigan striker Will, who was formerly on the books at Old Trafford alongside Toffees defender Michael.
Keane is poised to play a key role in getting players through the door at Manchester United for new boss Erik ten Hag.
The Red Devils are yet to make a signing under the Dutchman, meaning Keane could be in for a busy summer.
Solicitor Keane, who works for legal firm Brandsmiths, has prior experience in negotiating transfers and contracts.
The company website says: “In sport, Tom has vast experience in the football industry where he has become a trusted advisor and representative for household name players, managers and pundits.
“His work for these clients includes negotiating high value transfers, contracts and endorsement agreements.