So we use betting patterns each to compile a list of transfer probabilities.
You rarely see a poor bookie and that's because, aside from the occasional clanger, the oddsmakers usually get this sort of thing right.
Most of the odds don't offer the option of the player staying at his current club but for some of the bigger potential deals this price is in place.
Therefore it is interesting to have an extra closer look at these deals and according to the bookmakers it is MORE LIKELY that Gareth Bale will be a Real Madrid 'galactico' than a Spurs man by the end of the transfer window.
The best price you can get on Bale being a Real player is 2/5 while it is best-priced 3/1 he stays at Tottenham Hotspur. Those odds on Bale joining Real have been slashed from 11/4 too, a significant movement in the space of just one week.
Meanwhile, the man whose place he would take at Real - Cristiano Ronaldo - has seen his odds of returning to Manchester United cut from 7/1 to 3/1. While that rumour has escalated in the past 24 hours, it can be assumed to be a product of Real's reported world-record bid for Bale.
Odds are given for each player's shortest-priced move, though many are linked with multiple clubs.