Depends on how keen they are on securing his signature .... if Barca were to pre-sign him for 150m in January, but leave him at Spurs until June, that would work for both sides .... the same would apply if for example Eriksen was lined up to replace Modric at RM next year ...
Eriksen can only play CL for Spurs so why would a top CL club pay 6 months extra salary when they can leave him where he is and just pre-sign for June?
This is all pure guesswork on my part but certainly not beyond the realms of possibility .... the 'tactic' of securing players in January to move them in the summer is becoming more and more prevalent .... if you have the money this tactic squeezes out the smaller clubs from the transfer market even more .....
Would love to see us line up some summer signings this January ... that certainly worked out well for the Dippers last year ....