Sunderland stopper Jon McLaughlin sees his contract expire this summerSunderland stopper Jon McLaughlin sees his contract expire this summer
Sunderland stopper Jon McLaughlin sees his contract expire this summer

The concerning data that compares Sunderland's impending contract crisis to Portsmouth, Coventry City and more

Sunderland see a high proportion of their first-team contracts expire on June 30 – but how does their position compare to their League One rivals?

The Black Cats see over a dozen first-team contract and loan deals expire at the end of next month, with a number of key players free to depart.

And the data experts at Tifosy have crunched the numbers to find out what percentage of each League One club’s first-team squad see their deals – whether a contract or a loan agreement – expire on June 30.

So where do Sunderland rank when it comes to the percentage of their squad who could walk away next month? We take a look: