ways to aviod this dilemma is to for example. your signing....Welbeck and Heskey(lol), you only have a budget of 12million...You plan have a bid accepted for Heskey of 5m all upfront, but you could still bid all of your budget on welbeck (12m) but put it over 12 months, as long as you complete this transfer ahead of Heskey's you will have the funds in place to complete the transfer...as the only amount that will be taken out of the budget is the first installment!!then you would have 11m in your budget leaving plenty to sign Heskey aswell... that's the only way around it that i have found...