Deoderant recommendations for daughter please

My daughter is 7, and I’ve become aware that she could probably do with wearing a deoderant or anti-perspirant. There isn’t a smell to her all the time but the material her football kits are made from seems to make her smell after training.

Obviously I haven’t made any comment on this, and we’ve already spoken about hygiene recently when she asked to learn how to wash her own hair properly.

I’m looking for a recommendation that will be suitable for young skin and am not sure whether spray, roll-on or a stick would be best? TIA.