The 20 most expensive League One transfers - including ex-Portsmouth and Sunderland strikers, Sheffield United defender, Nottingham Forest pair and more!

With the football transfer market inflating in recent years, League One has seen its fair share of ‘big-money’ moves.

This has seen clubs across the division parting with large sums of money to improve and enhance their squads in years gone by.

So who makes the list of the biggest third tier transfers of all time?

Pompey have one figure from their past in the top 10.

The numbers in the list may not be the exact fees, but they’ve been detailed by Transfermarkt.com and Soccerbase.

Nonetheless, here are the top 20 expensive figures paid by League One clubs for transfers.

17. Britt Assombalonga - 4th

To: Peterborough From: Watford Reported transfer fee: £1.25m Date: 2013 Picture: Tony Marshall/Getty Images Photo: Tony Marshall

To: Peterborough From: Bristol City Reported transfer fee: £1.3m Date: 2019 Picture: David Rogers/Getty Images Photo: David Rogers

To: Sheffield United From: Cardiff Reported transfer fee: £2m Date: 2015 Picture: Tony Marshall/Getty Images Photo: Tony Marshall

To: Sunderland From: Wigan Reported transfer fee: £4m Date: 2019 Picture: Lewis Storey/Getty Images Photo: Lewis Storey