The Argentine is impressed by the club's new arrivals.
The Arsenal new boy was keeping in shape with Kosovo side FC Prishtina.
Newcastle United got relegated from the Premier League at the end of last season.
The Tottenham Hotspur striker failed to play well for England at Euro 2016 in France.
What lies ahead for Tottenham's Clinton Njie?
The Leeds United boss was pictured with Whites legend Giles during the club's pre-season tour of Ireland.
Warburton's Glasgow Rangers side take on Well in the opening game of the reformatted Scottish League Cup competition.
The Magpies will prepare for their assault on the Championship next season with the popular Spaniard in charge.
The Reds captain is clearly sorry to see his teammate go.
Erik Lamela has reported for pre-season duty at Tottenham Hotspur.