Glock keeps 'eyes open' amid season at the back

Timo Glock has admitted he is keeping his "eyes open" as the 2011 driver market unfolds.

The German revealed earlier this year that he opted to switch to Virgin even though Renault and Sauber were also options.

Glock, 27, said that at the time he made his choice, the futures of the aforementioned teams looked much dicier than Virgin's, the struggling new British team.