TalkSPORT reports how the 26-year-old is on the Serie 'A' club's summer radar, who are ready to rival the Premier League duo for the Spaniard's signature, by making an £8million bid when the transfer window reopens on July 1.
Spurs boss Andre Villas-Boas has been credited with an interest in bringing Callejon to White Hart Lane in the past, but it's Liverpool who looked most likely of any English club to secure the former Mallorca star's services ahead of the 2013/14 campaign.
However, Brendan Rodgers's hopes of luring the player to Anfield have now been dealt a serious blow, with Napoli prepared to enter a bidding war.
Callejon came through the youth ranks at Real Madrid before joining Espanyol in 2008.
After impressing at Estadi Cornella-El Prat, the midfielder returned to the Santiago Bernabeu three years later, but has only made 20 La Liga appearances for his boyhood club since.
His search for regular first-team action now looks to be over, though, with Tottenham, Liverpool, and Napoli ready to offer him the chance to rejuvenate his career.