Sports editor Dan Roan assesses whether the Premier League's unprecedented £3bn outlay during the summer transfer window, and the drama of a frenetic deadline day, raises concerns.

Premier League clubs splash out more than ever before in a transfer window after spending this summer surpassed £3bn.

A record-breaking transfer window that included players going on strike, hijacks, and unprecedented spending is finally over

Sports editor Dan Roan assesses whether the Premier League's unprecedented £3bn outlay during the summer transfer window, and the drama of a frenetic deadline day, raises concerns.