Manquillo - a 22-year old Atletico Madrid academy product and Spain youth international - is a player that many of you may well be familiar with after the player spent a season on loan at Liverpool when he was just nineteen.
If you don't know what we're getting in Manquillo then make sure you read our Scout Report here. In short, he's a very quick and dependable player that, despite being very young, will be looking to impress in the Premier League after his disappointing spell here under Brendan Rodgers.
The statement announcing his signing on SAFC.com says:
Sunderland AFC have completed a deal to sign Atletico Madrid full-back Javier Manquillo.
The 22-year-old Spaniard becomes David Moyes’ fifth signing of the summer after joining from the Spanish giants.
Manquillo is no stranger to the Premier League having spent the 2014-15 season on loan with Liverpool.
The right-footed player has represented his country at youth level up to under-21 and has both UEFA Champions League and Europa League experience with Atleti.
He spent last season on loan with French giants Marseille, gaining further European experience.
The agreement is a season-long loan initially, which includes an option for Sunderland to make the move a permanent four-year deal after the completion of the loan.
Overall I am very happy with this signing - Manquillo's signing means we can take Donald Love out of the firing line and perhaps add some solidity to a team that desperately needs it.
Manquillo came through at Real Madrid and then Atletico Madrid, so he certainly has some pedigree. He adds depth and competition to our full back positions and if all goes well he's ours at the end of the loan spell anyways. Win-win I suppose.