Emery took himself back to former club Valencia.
He was back at his old stomping ground on Saturday to see his former club in action against surprise package Getafe.
Emery was keeping tabs on a member of the Getafe back line, says AS.
A key man in defence for the relative minnows this season has been Togo international Djene Dakonam.
Signed by Getafe in 2017 from Belgian side Sint-Truidense for just over £2million, Djene has impressed in the two seasons since.