This is a little bit more of a challenge but it doesn't mean it can't be done.
Firstly, a parish council can provide a grant to another organisation to do something it would itself be empowered to undertake. I can't immediately think of how that relates to a football club but it might so worth checking.
Otherwise, you may be reliant on s137 which is what is otherwise known as the "free resource" which gives a parish council the power to pay grants amongst other things. However, there are limits on payments through s137 limiting its use to (a) things that are broadly for the benefit of the parish (and your football club might, for example, use the finding to extend their premises to enable it to offer football coaching to youngsters), (b) the expenditure is limited to £9.93 per head of relevant population (which means the number on the electoral roll) and (c) where any benefit is limited to a limited number of the population, that expenditure needs to be proportionate to the number of people who might benefit. There is also a requirement to account for that expenditure separately so it is shown in your accounts separately.
If all of the above applies it may be lawful but I'd suggest from your description of the process that in terms of good practice, it may be lacking. A grant policy (and there are lots of examples of good practice out there) would make this so much easier in future.
