The League One transfer deals that could leave Sunderland worriedThe League One transfer deals that could leave Sunderland worried
The League One transfer deals that could leave Sunderland worried

League One transfers: Every done deal completed by Sunderland's promotion rivals

Jack Ross delved into the transfer market for the first time this week as he looked to bolster his Sunderland squad – but how are their rivals shaping-up for the new campaign?

The Black Cats will face stern competition in the race for promotion, with a number of their third tier rivals having already completed some eye-catching deals – which could prompt some worry. Scroll down and click through the pages to see EVERY deal completed in League One this summer so far: