After starting the season well with a 2-0 win away at Fulham, Crystal Palace have hit bit of a slump with three successive defeats against Liverpool, Watford and Southampton. 

Up front will be manager Roy Hodgson's biggest concern with Christian Benteke having taken his struggles in front of goal from the previous campaign into this new one, while the team, as a whole, looks absolutely toothless in attack whenever star man Wilfried Zaha is unavailable.

In comparison, defensively, Crystal Palace look a much better and more balanced unit with Mamadou Sakho often putting in very commanding performances at the heart of Hodgson's defence.

James Tomkins has also been decent at the back since arriving at Selhurst Park in 2016, but the addition of another English centre-half would undoubtedly make the Eagles even stronger in that department and ease any fears of a relegation scrap.

And that man is John Terry.

Terry is still a free agent having left Aston Villa in the summer after the expiration of his contract with the West Midlands club, and could make for a solid reinforcement in January once the Premier League registration window reopens.

Despite being 37 years of age, £900k-rated (via Transfermarkt) Terry still has plenty to offer. The former Chelsea and England captain has never had pace, relying on his reading of the game instead to halt attacks before they manifest into something dangerous.

Ultimately, Terry would add a calming presence to Crystal Palace's defence and could form a strong central defensive partnership with Sakho or come in as cover for either the Frenchman or Tomkins.

Defence is not a pressing matter for the Eagles right now -- or at least compared to attack -- but, if for whatever reason Hodgson was interested in bringing in a centre-half in January, then it could be worth looking at Terry.