The Argentine centre-back is simply not getting the chances at Tottenham Hotspur.
The Magpies have endured 10 nightmare months in the Premier League but many supporters may not actually realise how bad it has been.
The German boss has been linked with a move to Liverpool by the end of this week.
Aston Villa take on Chelsea in their next fixture.
We take a look at why Sam Byram and Alex Mowatt have failed to impress for Leeds United so far this season.
A gallery from Argentina's training session ahead of their upcoming matches, featuring Manchester City, Everton and Manchester United stars.
We take a look at why Cyrus Christie and Richard Keogh have impressed for Derby County so far this season.
A selection of the latest stories in the media surrounding Liverpool Football Club this Tuesday morning.
The Tottenham playmaker has revealed that he has watched the Italian maestro’s technique at dead-ball situations.
Leeds United have not won a single game at Elland Road in the Championship this season.