The pair will be working together next season at Chelsea but Ballack is set to put club loyalties aside when he faces his new manager on Thursday at St Jakob-Park in Basel.
Ballack, whose 25-yard free-kick earned Germany a 1-0 win over Austria, said: "We played against Portugal in the World Cup and from that point of view I´m looking forward to winning against them again."
Copyright (c) PA Sport 2008, All Rights Reserved.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: https://www.givemesport.com/writeforgms