Sergey Sirotkin has denied his future at Sauber is being overshadowed by the Swiss female driver Simona de Silvestro.
Funded by her wealthy backers, de Silvestro - who also ran at Fiorano in April - returned to track action this week in a 2012 Sauber at the Valencia circuit, Spain's El Mundo Deportivo reports.
But, earlier, Russian teen Sirotkin seemed more destined for Sauber's affections, closely aligned with the reported 'Russian rescue deal' that last year reportedly rescued the then ailing Hinwil based team.
Since then, however, Sirotkin's involvement went decidedly quiet.
In fact, it is now rumoured that Sauber's saviour was in fact not Sirotkin's backers, but Bernie Ecclestone, who...
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