Don't worry about them. "Yearling" is an old English word for "hot mess". Foals are VERY narrow and the chest doesn't expand and fall in to place until they're almost 2 and can be even closer to 2 1/2 for large horses like Warmbloods.
It's perfectly normal and in fact almost desired for the legs to be straight but angled out, because as they grow, the chest and hind quarters expand and turn the angle of the leg and hoof in.
If your farrier tries to correct it now, you'll actually be overcorrecting and screw up his legs later. You can't do an honest conformation of a yearling, there's too much growing durring this phase.
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