Ainsworth will be down in Bournemouth in time for the final pre-season friendly at Dean Court, when we face Portsmouth this weekend.
Ainsworth, 18, is a forward and a product of the Derby County Academy who is said to be able to play on the wing, or up front.
He already has already represented England at U19 level.
If he impresses, there is every chance that a longer term loan will be the result.