Here is an example:

Armolas the wood elf hunter has fired with his longbow on a charging beastman, his turn end and armolas is forgetting to put his bow away and take his dagger. The beastman close the gap between them and strike Armolas. Can Armolas then drop his bow, take his tagger for 1 maneuver = 1 fatigue, in order to parry? (His dodge is recharging so he can't do anything else but parry).

Basically, can a player maneuver when attacked even if it isn't his turn if he spend the necessary fatigue to do so.

Thanks

No, the Elf cannot do as you described. I would, however, let him parry with his bow, but risk damaging it in the process.