Martin O'Neill - a career in pictures

Martin O'Neill tendered his resignation at Aston Villa yesterday afternoon, just five days before the start of the new Premier League season.

Click here or click the image to launch our guide.

No doubt the exact circumstances surrounding his departure will become clear in time, but for now O'Neill is a free agent. We suspect that won't be the case for long - just take a look at some of the highlights of his career.