Monisha Kaltenborn has warned it will 'take time' to stabilise her Sauber team after it was acquired by the Longbow Finance group, but says it is now looking forward to a brighter future all the same.

Ahead of the Hungarian Grand Prix, Sauber confirmed it had been sold to the Swiss financial services company in a deal that will see Kaltenborn stay on as team principal and eponymous founder Peter Sauber formally retire.

Though relatively little is known about Longbow Finance itself - despite rumours it is has links to the wealthy Rausing family, founders of Tetra Pak -, Kaltenborn says the deal represents a significant moment for Sauber after months of financial uncertainty with a car that hasn't been updated since it was revealed at the start of the year.

Indeed, while Kaltenborn says the deal means upgrades are likely to be made possible before the end of the year in an effort to score points that could take it back above Manor in the constructors' standings, she admits there is a view towards 2017 now.

"We are working on that [the future], but you know these things take time," she said. "We have had a rough time these past few months and the first target of course of the new owners is to stabilise the entire group.

"So you have to settle matters and then of course, again, to get back to your business as usual to have then a basis for being competitive.

"I'm sure we'll have a few things still coming up this year, I mean we still have a few things to do, we don't want to end up where we are, but of course we are focusing more on next year and there I am very confident you will see a lot more."