Yes, you can move Avios to Aer Lingus, but I really don't see the point of that as you have more redemption options on BA.

For what it's worth, somewhere else on the web made a comment about Royal Jordanian.

I had a look at their programme and their flight calculator shows the earning on the other alliance airlines. Based on my travel, that's really going to work for me to get my Sapphire or Emerald status.

I don't really care about the Avios - the lounge access and check-in at the business class desks are what I value and all I need is status with whatever oneworld airline has it easiest and it looks like RJ is the go to for this at this point, unless anyone has a better idea.