Marcus Ericsson says Sauber is showing strong intent with some bold plans for 2016 which convinced him to sign a new deal with the team last month.

The Swedish driver and his Sauber team-mate Felipe Nasr penned contract extensions for next season prior to the Hungarian Grand Prix and Ericsson feels the team has huge potential over the coming 18 months.

"Straight after Silverstone we sat down to come up with a plan for the rest of the year and briefly about next year's car," Ericsson said. "We've put quite a bit of trust in the developments coming now and at the end of year and hopefully that can put us in the right direction for next year.

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"It feels like there is a lot going on for next year so that made the decision for me to stay here for next year very easy."

The former Caterham F1 driver also says the team's 2016 development plans depend on how much financial support it can secure.

"I don't know yet but it will come down to how much money we can have on development. It is not decided yet."

The 24-year-old enjoyed a promising start to the 2015 F1 championship with two points finishes over the opening three races which quickly banished the legal spat between the Swiss team and former driver Giedo van der Garde.

After suffering a dip in results since the start of the European stint of the year Ericsson returned to the points at the Hungaroring and says updates expected in the coming weeks should help Sauber fight for points on a regular basis.

"For Spa we should expect quite a big jump from the engine, then for Singapore we have quite a few things for the aero side," he confirmed. "It is quite difficult to know how much it will bring us but it should be another decent step on the lap time. Hopefully those improvements should see us back to where we were at the start of the year."