Chelsea: Diego Costa can still react positively - Ruud Gullit

Chelsea manager Jose Mourinho's treatment of Diego Costa and Eden Hazard this week showed me just how desperate he is to get them back to their best form.

As a manager I would try anything I could to get my under-performing players doing the things they normally did, but I could not be sure whether it would work or how they would take it.

With Costa, by dropping him for Sunday's draw with Tottenham,Mourinho was trying to get a reaction. We don't know yet if it is going to end up being a good one.

Costa was left on the Chelsea bench during their 0-0 draw at White Hart Lane

We all saw how Costa acted on the day, refusing to warm up before the game and throwing away his bib during it when he was not used as a substitute.

It is going to be a problem if he keeps behaving like that, but he could still respond positively in the long run and that is the reason Mourinho left him out.

It was also a risk for Mourinho to criticise Hazard publicly before kick-off, saying he was not convinced the Belgian can be an effective number 10.

Mourinho has tried something similar a couple of times already this season, but it is still strange to hear it because we are used to him protecting his players.

On this occasion, I think he will be happy with the reaction he got and Hazard's attitude was a good example for Costa to follow next time he plays.

'There comes a time when enough is enough'

Diego Costa has scored a goal every 323 minutes in the Premier League this season, compared to every 83 minutes in 2014-15

Mourinho kept picking Costa when he was not scoring for weeks and weeks and also defended him when he behaved badly on the field.

He was very loyal to his player but there was always going to be a time where he would say 'enough is enough' and leave him out, and it came at the weekend.

When you do that and the player himself still thinks he has done enough to be picked, then you have a problem - that seemed to be what was happening with Costa's behaviour at White Hart Lane.

But Mourinho is the manager and now Costa knows he will be tough with him too. What happens next is up to him, but if he is not playing well, then he will stay on the bench.