Christian Klien (right) will test for Spyker at Spa-Francorchamps tomorrow (Thursday).

However, Team Principal Colin Kolles has stressed that no decision had been taken regarding the race driver position for the rest of the season.

"We are very grateful to Honda for releasing Christian at such short notice to drive for the final day of our three-day test at Spa," said Kolles. "There are many elements to be considered before we can make our final decision on drivers and we will carefully evaluate all the options over the coming days before making any announcement regarding the European Grand Prix and beyond."

"I am very happy to have been invited to test for Spyker at Spa, one of my favourite tracks," said Klien, "and to have the opportunity to work with a team which is determined to make progress this season.

"I would like to thank Spyker for this opportunity and also the Honda Racing F1 Team for its help and support in permitting me to test for another team on this occasion."