Omari Kellyman is a professional footballer who Chelsea have signed from Aston Villa for £19 million this summer. The move came about after Villa showed an interest in Chelsea academy graduate Ian Maatsen and eventually signed the left-back for £37.5m. This meant that Unai Emery’s side needed to sell a homegrown player in order to comply with the Premier League’s profit and sustainability rule (PSR). Chelsea were interested in signing arguably Villa’s most highly-rated youngster, Kellyman, and he is now their player after completing a move last week. It is fair to say that most Blues supporter…