Southgate knows the team have to find their “next level” as the knockout phase gets under way against Slovakia in Gelsenkirchen.
The Test captain visited the England squad at their Middlesbrough training base before Gareth Southgate’s men jetted off to Germany.
The Bayern Munich striker has scored six goals in his last six appearances in knockout games for England.
Germany 2-0 Denmark: Goals from Kai Havertz and Jamal Musiala send the hosts into the quarter-finals