Jermaine Jenas is battling for his place in Tottenham's midfield.
Modric is close to a return after breaking a bone in a leg and the outstanding form of fellow Croatia international Niko Kranjcar since his arrival from Portsmouth sets manager Harry Redknapp the sort of selection problem he likes.
Aaron Lennon's place on the right wing is secure, as is Wilson Palacios as the midfield anchor man.
Redknapp insists Kranjcar was not bought as a stop-gap replacement for the injured Modric and he looks like the midfield goalscorer Spurs have lacked in recent years.
Kranjcar is happiest in a more central role which puts Jenas' place under threat.