Ever since, the England global has been in and out of Antonio Conte's team, with niggling injuries and illness issues never really allowing him an opportunity to stake a claim for a regular berth in the starting XI.
The 59-year-old has enjoyed a fantastic season with the Naples outfit, who are just four behind Juve in the Serie A table.
In the past it has also been felt that Chelsea's players had a huge amount of power and that when results have dipped the club's Russian owner has often been too fast to blame the manager. It's easy to just look at the recent games, but I try to remember I played probably 25 to 30 games with no mistakes at all before that. They are 10 points behind fourth-placed Tottenham, and likely to miss out on a Champions League place. My family love to live here.
He told Sportsmail: 'This season has been hard because we have lost a lot of points, especially at home.More news: Bayern Munich announce plans to play friendlies in United States
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'Before they've changed the coach, and kept the players. That is why we are in this position now. here's no reason why.
Chelsea will be looking to get back to winning ways following a poor run of form when they take on Southampton at St Mary's on Saturday afternoon.
The former Shakhtar Donetsk man went on to add "We are doing the exact same job as we did last season". The only title we can win is the FA Cup so we go for that. For example, we were in control during the last game against West Ham and could have won 4-1 or 4-0 but we drewI think our target was to stay in the top four and we are fifth. Conte will therefore have to name a strong line up to face the south coast side, as he aims for only his second away win in 2018.