I think, the time to change Manchester city head coach is now, because things are going wrong in the team which Manchester city president need to find emergency solutions to it before it will make Manchester city not to end up in 1st position in the premier league competition. Tottenham draw matches with some teams and won some matches to defeated some team which those teams are not stronger than Manchester city, but for Tottenham to play Manchester city in their home and defeated them with 0-4 without allowed them to score a single goal, showed there is an error that need to be corrected. Manchester city head coach need to do what can save the team from this poor performance before it will be too late for him, because it will be a shameful thing to Manchester city that they have dropped down to six or five position in this season.
It's too early to taking about changing manager because there is still time for Manchester City to bounce back moreover Guardiola has just extended his contract so this proven Manchester City owner still fully trusted to Guardiola and about the match against Tottenham if we see based on meeting records for both teams Tottenham is became an one of the team who difficult to beated in Guardiola era this because everytime they met Manchester City have to hard struggling to gets the winning results from Tottenham but indeed for race title Guardiola has been said it is hard for Manchester City to defend their title but Guardiola still hasn't give up yet and he believe Manchester City will be able to performing well soon
Guardiola probably extended his contract with Manchester City for another two years two days ago. The offer to extend the contract was made by the Manchester City management. The Manchester City management has made such a decision even after Manchester City has lost four consecutive matches. It can be assumed from this that the Manchester City management is not thinking of sacking Guardiola now.
Moreover, before Guardiola took charge of Manchester City, Manchester City was a mediocre team. Guardiola has turned this team into one of the best squads in the world. The Manchester City management will not take the decision to sack such a coach.
More importantly, where will Manchester City get an experienced coach than Guardiola now? The Manchester City management will never take the risk of hiring someone less experienced as a coach.