With 2025 just a matter of days away, we thought it was a good time to assess the transfer spending of Premier League teams over the last decade.

Player trading can be tricky. The goal, of course, is to buy low and sell high but there are plenty of English top flight clubs who have not mastered the art. In fact, some are extremely poor at it.

3 of our top 5 in today’s list are actually among the worst clubs in the world for selling and buying non-academy players.

Press the next page as we list the Premier League clubs who have made the biggest losses in the transfer market since 2015 (using data from the CIES Observatory).