However, many Manchester United fans are concerned about the new campaign considering the lack of signings during the summer transfer window - Fred, Diogo Dalot and Lee Grant were the only incomings.
Crystal Palace will be hoping history doesn't repeat itself after signing Ghana striker Jordan Ayew on a season-long loan from Swansea.
A Shaw giveaway deep in his own area in the 75th minute nearly gifted Leicester the leveller, but De Gea made another spectacular save to stop Demarai Gray's first-time shot from a pinpoint Vardy cross.
"The market closes today". I'm happy to help the team.
Midfielder Joe Ralls says Cardiff City's team spirit will be key to their survival this season. No one fancied us to go up and it's always nice to prove people wrong.
It was a pretty boring deadline day for much of the day with Sky Sports News often scrambling around for something to talk about or someone to talk to whilst little transfer activity actually happened.
But, with football in England resuming earlier than elsewhere, Premier League sides would still be at a disadvantage to their European rivals if Fifa's proposals are introduced - which could be for next season - but it would be reduced.
After the United goal though it was mostly one-way traffic for the visiting side, with David De Gea repeatedly called into action including a miraculous save on a James Maddison shot that should have drawn Leicester level. Any deal for Tottenham's Toby Alderweireld was a way off on the eve of the deadline and interest in Barcelona defender Yerry Mina has been tempered up until now by prohibitive financial demands.
United's squad is stretched through injuries and fitness issues with returning World Cup stars. "They trained Monday, Tuesday, Wednesday and today, so you can imagine they are not really fit and ready".
He also praised Luke Shaw, who scored to seal the win and had been a target for Mourinho's criticism last season.
The 32-year-old played for his old club Everton last season and recently moved to the MLS where he joined D.C. United.
"Is hard for me to understand, to feel, to believe we finish second".
"They spent more money than us so I think in the Premier League, we must get used to teams who have players of the same quality that we have".