Australian soccer star Tim Cahill has been desperate to return to action in Thursday's crucial Group D finale against Serbia after earning the first red card for Australia at the World Cup, Australia's media reported on Monday. Cahill, who saw red in the opening match against Germany, was forced to watch on as Harry Kewell was sent off after 25 minutes in Australia's 1-1 draw with Ghana in Rustenburg at the weekend. As Cahill will return to the Australian lineup to play Serbia in a match the Socceroos must win to have any hope of reaching the second round, Kewell and defender Craig Moore will be sidelined by suspension. Cahill has been preparing for the match of his career and said he knows exactly how Kewell will be feeling. 'I've had the hardest week of my life and obviously it's going to be a very hard week for H (Harry Kewell),' Cahill told ABC News. Cahill said the team's pride has been restored by the way it played against Ghana. 'I'm just excited. I think the performance the lads put on Saturday was exceptional,' he said. 'I'm just proud to be a part of this team. To not play a part but to be there through the week and to be there for the lads before and during it, it's such a proud moment in Australia football,' He said. If Ghana beat Germany, a 1-0 win over Serbia would be enough for Australia to progress in World Cup. 