Manchester United boss Jose Mourinho has become the first manager in football to spend £1 billion on transfers.

Analysis of the Manchester United manager's all-time spending shows he has now spent just over £1.1bn in 17 years as a boss, reports the Daily Mail.

Pep Guardiola, Mourinho's nemesis in Spain and current cross-city rival at Manchester City, has spent £859m, in a little over half the time.

The only other manager who comes close to their spending is Bayern Munich manager Carlo Ancelotti, with Chelsea one of nine clubs he has managed in 22 years, spending £970m gross to date.