Gary Neville says Manchester United "have to win" the Premier League title this season, and if they don't there will be "no excuses".

After finishing sixth last year, United kicked off their 2017/18 campaign with a thumping 4-0 win over West Ham on Sunday.

Summer signing Romelu Lukaku scored twice in the win while another new addition, Nemanja Matic, impressed after his move from Chelsea.