Charlton's boosted £10.3m squad value compared to Birmingham City, Bolton, Reading and League One rivals

It's proven to be a fruitful summer transfer market for Charlton Athletic so far with Nathan Jones keen to get business completed in time for pre-season preparations.

The Welshman worked well with the squad he took over in February but will be keen to put his stamp on the Addicks team. So far, Jones has been reunited with Luton Town midfielder Luke Berry while Will Mannion provides another option between the sticks.

Those acquisitions have added new value to the Charlton Athletic squad and other League One sides will be looking to follow suit. LondonWorld looks at the division's most valuable sides, according to squad market value as of June 15 via Transfermarkt - some most valuable players listed are to be released by clubs on their contract's expiry over the coming weeks and will join new clubs.