The England midfielder's future with Spurs is in doubt after it emerged he was offered to Real Madrid as part of their deal for Gareth Bale and Sergio Reguilon. However, the prospect of taking on Alli was rejected by Real coach Zinedine Zidane.
Monitoring developments is PSG chief Leonardo, says the Telegraph, who has been a long-term admirer.
Knowing Spurs are willing to part with Alli, Leonardo is planning to open talks about a fee.
Further encouraging for PSG is that Spurs would be happy to negotiate a loan departure for their midfielder.