French driver Tom Dillmann will take over the race seat of the #19 EQ8 Caterham Racing car in this weekend's round of the GP2 Series at Hockenheim in Germany, the team has announced.

"I am really happy to be back," said Dillmann, who last raced in the feeder series for Arden earlier this year at Barcelona. "Driving for a successful team means that we should be able to achieve good results together and I hope that these two race weekends will help me find a GP2 seat for the rest of the season.

The 25-year-old Frenchman first raced in GP2 in 2012 with Rapax, with whom he claimed his sole race win in the second sprint race at Bahrain. He then enjoyed a full season with Russian Time alongside Sam Bird, helping the team to win the championship in its first year of competition. However a team shake-up in the wake of the death of team principal Igor Mazepa left Dillmann without a full-time race seat for 2014.

"Hockenheim is the closest circuit to my house and I consider it my home race," Dillmann continued. "I have spent many hours driving the track in various categories and had several wins there. This weekend I hope to be straight on the pace, fighting for the top step of the podium and making a good impression on my new team."

Dillmann will be replacing Alexander Rossi, who has split with Caterham's F1 and GP2 teams following the team's recent takeover by a new business consortium.

"There has been a lot of well publicised change at Caterham during the last few weeks, but we are very pleased to remain part of Caterham Group, alongside Caterham Moto Racing Team and fly the Caterham motorsport flag in our respective Series," said GP2 team principal Mia Sharizman

"We wish Alexander all the best for the future, but now welcome Tom to our team and have confidence that he can help us gain top results and further boost our championship position," he continued. "Every single EQ8 Caterham Racing team member has put in a huge effort this season and I would like to thank them for their hard work and continued dedication to the team."

However, Rossi will still be in action this weekend as he moves to Campos Racing in place of Kimiya Sato, who has a clash of commitments with his Auto GP World Series campaign at the Red Bull Ring. Sato currently has a large points lead in Auto GP over Kevin Giovesi and Markus Plummer.

Earlier this week it was announced that current Venezuela GP Lazarus driver Nathanael Berthon would join Caterham F1 Team's new Development Driver Program.

"We are very pleased to welcome Nathana?l into our team as the first driver in our Development Driver Program," said the new Caterham F1 CEO, Christijan Albers.

"He is an exciting young talent with a proven track record in the feeder series for F1 and as he already has F1 experience he fits very neatly into our team," he pointed out, referring to Berthon's appearance in the 2011 young driver test at Abu Dhabi for HRT.

"We will work closely with him to help him reach his full potential and are all excited about seeing him continue to grow as a driver, in and out of the cockpit," Albers added.