The former midfielder says Manchester United's struggles are a warning to Arsenal.
Tottenham Hotspur striker delighted with the club's victory.
The Celtic manager worked with the Manchester City attacker at Liverpool.
The South Korea international has already raised his game this season, scoring stunning efforts from the edge of the box in recent Premier League wins.
Leeds United head coach Garry Monk says defender's substitution was a precaution, while defender is hopeful too.
Former Manchester United striker Javier Hernandez scored for Bayer Leverkusen against AS Monaco in the Champions League on Tuesday.
The forward has been in superb form for Arsenal recently.
The changes made to the starting line-up worked wonders for Manchester United as they beat Leicester City 4-1, while Wayne Rooney watched from the bench.
City travel to face the Scottish Premiership side in the Champions League.
Rangers new boy Joe Garner was 'ineffective' on Sunday, according to pundit Michael Stewart.
The spotlight was on Gareth Barry on his 600th Premier League appearance, the expectation on Idrissa Gueye after an exceptional start to his Everton career and the pressure all on Ross Barkley following a very public dressing down before Middlesbrough arrived at Goodison Park. It demonstrated the latter’s refusal to hide, and lack of ego, that the entire heart of Everton’s midfield functioned as Ronald Koeman demanded.
Pep Guardiola has admitted he is surprised at how quickly Manchester City have gelled under his stewardship.