The Mail on Sunday says Ronaldo's ambition to become the world's best paid footballer is causing a growing rift with Real Madrid that has alerted Europe's big-spending clubs.
Along with the Premier League trio, PSG are also eyeing the ex-United star.
Ronaldo's salary at Real sees him 10th in the high earners' list at £7.98million net, around half what Samuel Eto'o earns at rich Russian club Anzhi.
His immediate target is a 50 per cent increase to around £11.8million net.
But the issue is complicated by Ronaldo's dissatisfaction at his image rights - 50 per cent of which are owned by the club - and Spain's revised tax laws.
Ronaldo earns £13.45million from off-pitch deals.
That means he is effectively paying his own wages at the Bernabeu.