Everton were beaten 1-0 by Liverpool yesterday evening.
The Magpies beat Wigan Athletic 2-0 on Wednesday night.
Newcastle United won against Birmingham City in the Championship on Saturday afternoon.
The former Magpies striker was not impressed with Shelvey's behaviour in Friday's clash with Nottingham Forest.
Celtic drew 3-3 with Manchester City when they met the Premier League side in Glasgow earlier this season.
Newcastle extended their lead at the top of the Championship with a 2-0 win at Elland Road.
Leeds United will face Newcastle United at Elland Road in the Championship this weekend.
Ronald Koeman enraged plenty of Everton fans with some controversial comments.
It's been an almost perfect run of results for The Magpies, but one of their former stars beleives they can still improve.
Wolverhampton Wanderers are currently in 19th place in the Championship table.