How do Villa approach the loan market?

Aston Villa are in talks to loan Alejandro Garnacho from Chelsea, just days after the Blues made the Villans' Morgan Rogers the most expensive British footballer in history with their £117m purchase.

But what's the thought process behind the loan deal - and how does Unai Emery's previous interest in Liverpool's Harvey Elliott and Newcastle's William Osula, plus Jacob Ramsey's move to St James' Park, relate to it?