Mercedes F1 test driver Pascal Wehrlein could be in place to drive for Force India at this week's second pre-season test in Barcelona, according to reports.

The team is coming under increasing scrutiny following the decision to postpone its 2015 on track debut until the second pre-season test in Barcelona and even then will only do so by hitting the track with an updated version of its 2014-specification VJM07.

Furthermore, it may be forced to do so without its own driver line-up of Nico Hulkenberg and Sergio Perez behind the wheel after German publication Sport Bild claimed Wehrlein will instead be in the car.

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The reasoning for this is believed to be down to Force India's delay in paying suppliers - including engine provider Mercedes - on time, with the DTM driver being offered as a means of giving him more track time in recompense.

Though the team is insistent the new VJM08 - which hasn't broken cover as yet - will turn its first wheel at the final test in Barcelona, it will still arrive at the opening round in Australia with significantly fewer miles than its rivals.

UPDATE: A Force India spokesman has confirmed Hulkenberg and Perez will be present in Barcelona, but the final driving line-up hasn't been finalised.