Get the City transfer window latest, team news, match updates and analysis delivered straight to your inbox Ilkay Gundogan has issued a warning to Manchester City ahead of the start of their Premier League title defence, which begins on Sunday.
Pep Guardiola 's side have won three of the last four league crowns in England's top-flight and are firm favourites to retain their crown in this campaign.
However, City 's rivals have strengthened significantly in the market this summer, with Chelsea and Manchester United both spending in excess of £100m.
The likes of Liverpool and Leicester City are also expected to cause problems, while Gundogan himself has named Spurs as a side that can be difficult to overcome.
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