Hugo Lloris has warned that Tottenham must improve if they are to have any chance against Borussia Dortmund in the Champions League tonight after a patchy display against Leicester.

The French goalkeeper, 31, kept out Jamie Vardy's second-half penalty and made a number of other important saves as Spurs won 3-1 at Wembley. Spurs beat Borussia Dortmund twice in last season's group stage but the German league leaders are a different proposition this campaign five points ahead of Bayern Munich at the top of the table.