Why Diego Costa could be the most important signing this summer

Have Chelsea bagged the most important transfer of the summer?

Chelsea in 2014/15 – time for Mourinho to deliver

No more mind games – 2014/15 is the season Mourinho must deliver

The race for the title – where are the contenders most vulnerable?

As the race for the title intensifies, what are the big weaknesses of the teams vying for top spot?

Shooting stars: Which Premier League clubs spend most on their attack?

Half a billion pounds spent on new strikers since 2011 – but who has made the best buys?

Transfer deadline countdown: 5 things Newcastle and Arsenal have in common

Adam Widdrington looks at the struggles of Newcastle United and Arsenal during the transfer window