Alonso pays tribute to Dennis

Although Alonso had a fractious relationship with Dennis during his season at McLaren in 2007, the double world champion said that didn't prevent him from respecting Dennis's achievements during his 28 years at the helm of the team.

"I think we are not best friends, but I think there is respect from each other," said Alonso at the launch of Renault's new R29.

"We didn't have a perfect end to our relationship but we know how much he has done for Formula One. When I was young I remember McLaren and I had great respect for him.

"There are not many people like Ron in Formula One anymore. Ron did it like in the old days: one guy developing and growing up with the team, making a Formula One team successful and winning championships."

Alonso had joined McLaren on a multi-year deal in 2007, but the two parties agreed to end the contract after just one season due to the poor relationship between them, allowing the Spaniard to return to Renault.