Aston Villa had an interesting summer transfer window. On one hand, it was a transfer window to build for Champions League football, but on the other, they had to deal with financial matters. Those dreaded words Profit and Sustainability Rules (PSR) and Financial Fair Play (FFP) had to be met, which meant losing key players. Aston Villa got big money for Moussa Diaby as he joined the Saudi Pro League, whilst Douglas Luiz joined Juventus. Gabby Agbonlahor feels this isn’t allowing his former side, as well as Newcastle, to be competitive and maintain a top-four challenge. Last season, it was New…