It was already expected that the 34-year-old, despite losing his full time race seat to Daniel Ricciardo earlier this season, would return to the cockpit for the inaugural Delhi grand prix.

And he will re-acclimatize with the initial practice session in Singapore, the Spanish team said.

"It is great to have Narain back in the car as it will give him critical seat time before he drives at the Indian GP," said team boss Colin Kolles.

Karthikeyan confirmed: "The team had assured me that I'd be driving (in India) when I stepped out of my seat after the European GP."

Meanwhile, Force India's regular Friday driver Nico Hulkenberg has revealed he will not be in action in Singapore next weekend.

"The team wants to give Adrian (Sutil) and Paul (di Resta) more track time and I understand and accept the decision," he said on Twitter.