I'm sorry Glaston, but just as I wish for Milner to stay, the lure of Manchester United for a footballer is one hell of a pull. Modric will very much fancy a move to play for one of the biggest clubs in the WORLD.
Spurs are a decent sized club, and yes, getting in the CL qualifiers is a great card to have, but they, like Villa, like Everton, hell even Man City, are not even near to the global behemoth that is Manchester United.
Modric will be half way up the motorway to Manchester with Milner once Fergie, if he hasn't already, has a word in his ear.