Why not just use the yew for something else? 60" is plenty long enough to turn into a fantastic bow. Part of being a successful bowyer is being able to see a working bow of some description in a given piece of wood. You can't surely be ok with finding a stunning piece of yew (it looks perfect from your picture, although there isn't a photo of the end grain so not sure on sap/heart ratio) which is this straight and knot-free and paying for shipping, tax and the risk of it being ruined by sending it overseas just for another piece of wood? Good quality yew isn't that easy to come across in the UK so use it, don't give it away.
Post a picture of the end with a ruler/tape measure as reference. For all you know, it could be the right size for a billeted ELB. Bear in mind (and this is meant in no disrespect as we all start somewhere!) you haven't yet made a successful bow. To try and get a heavy draw-weight longbow/warbow (I believe you mentioned in a different post that your goal is to make a yew warbow?) with very little experience is pushing the limits quite a bit.
If it were me, I'd split the log (depending on it's width), seal the ends if they're not already sealed and set it aside for a year or two. Don't give it away or trade it for another piece from the US as it's just not worth the cost of shipping at this stage. Make lots more bows, ideally from staves if that's your end goal, and when you feel you can chase rings well, negotiate knots and pins and twists and weird sapwood boundaries, take this yew and have a go.
