Luckily for Graham Potter at Chelsea he already has he inside track on some of his new players. Given the speed at which he has been tasked with repairing a struggling side and the fact he now has to do so with an international break blocking preparation, any extra information available to him is valuable.
Not only does he have Marc Cucurella, who played a key tactical role in his first match against RB Salzburg, Potter also has knowledge of several more Chelsea players.
His Brighton side played against Chelsea twice in quick succession over the winter period last season, drawing both games 1-1 after going behind, and will have learnt a lot about the attitude, mentality and skill of the squad he has subsequently inherited.