Arsenal winger Lukas Podolski has been ruled out for between eight and 10 weeks after pulling his hamstring in the
It was originally thought the German international, 28, would only miss three weeks of action.
Gunners boss Arsene Wenger said: "His hamstring is much more damaged than we thought at the start.
"It is very disappointing and we have paid a very heavy price."
Jack Wilshere and Aaron Ramsey also suffered knocks but Wenger said both will be involved when Arsenal host Tottenham in the Premier League on Sunday.
The Gunners have also suffered injuries to midfielder Mikel Arteta, winger Alex Oxlade-Chamberlain and defender Thomas Vermaelen.
Wenger added: "Arteta is doing OK but there are few weeks to go with him. Vermaelen could be back after the international break."