Having warmed the bench for much of last season under Rafa Benitez, he ran the risk of becoming a forgotten man at Stamford Bridge as the Blues looked to the future in their pursuit of returning to the summit of English football.
This term he has become a first-team regular once more under Jose Mourinho, though, and his vital goal to seal a well-earned point against Spurs on Saturday only acted to reinforce his importance to the Chelsea cause.
John Terry: Since the start of 2011/12 in the PL, Terry has scored more headed goals (9) than any other player despite missing 31 games #CFC— WhoScored.com (@WhoScored) September 30, 2013
Now there is talk in The Mirror of the current Blues captain being offered an extension to his contract—one that expires at the end of this season. Like Frank Lampard who experienced a similar situation last year only to be offered an extension late in the campaign before him, it will be a shrewd move by the Chelsea management.
For the best part of a decade, Terry has been an essential part of the foundations of which the modern Chelsea has been built.
Sure, Roman Abramovich's deep pockets have helped accelerate Chelsea's pursuit of success, but the presence of Terry has been a vital aspect of everything the Blues have achieved in that time.
It's natural that as a player ages, his position at a club comes under scrutiny. In the modern game, where athleticism plays just as much a part as a player's ability, those the wrong side of 30 are having to prove themselves more than ever.
Turning 33 in December, Terry falls into that bracket, although what he has achieved with his performances in the Premier League thus far in 2013-14 has put any questions over his ability to rest.
And in an era where number crunching can play a considerable role in a manager's assessing the suitability of a player in their squad, the stats continue to serve Terry well.
Chelsea have conceded just three times in their six league games this season—a record only bettered than Spurs and Southampton. Mourinho prides himself on being strong at the back and he's never stronger than when his captain is present.
Terry's form has been a big part of Chelsea's defensive strength, with the Englishman committing just 0.3 fouls per game, making 6.2 clearances and blocking 0.5 shots*.
His equalizer at White Hart Lane also outlined the threat he carries going forward, reinforcing how deadly he can be.
According to the tweet from @UberFotbalFacts below, he has now scored more professional goals (56 for Chelsea) than Andres Iniesta and in the past three seasons has scored more headed goals than any other Premier League player (refer to above @WhoScored tweet).
John Terry has scored more professional club goals than Andres Iniesta— Uber Football Facts (@UberFotbalFacts) September 28, 2013
Indeed, it makes for impressive reading, but more importantly for Terry on a personal level, show his manager that age has not limited what he is capable of on a football pitch.
If Chelsea's top brass make good on the rumors surfacing regarding their captain's impending contract offer, it will be a sign of faith that rightly shows Terry is as important as ever at Stamford Bridge.
*Stats via WhoScored.com