The Germany midfielder saw action in their 1-1 draw with Chelsea.
"Everyone can dream but our main aim is to get Champions League football," the Tottenham midfielder said.
"I think we've got the quality and the ability in the whole squad to do that, I'm very confident.
"It's a long season and everyone has to be at the top level to reach that."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball