Robert last played in the Premier League with Portsmouth (PA Images)

The 32-year-old left winger, who joins after an unhappy stay with Levante in Spain, had four years at Newcastle and also had a brief spell with Portsmouth.

The Frenchman told BBC Radio Derby: "Spain was a very bad experience.

"But now that is finished I am here to play every game, to work hard to prove again that Mr Robert has come back."

Interview: Derby winger Laurent Robert

"I'm ready, my head is ready, my left foot is ready to score some goals - I am ready.

"I like this football and the atmosphere in England is the best in the world."

I know the situation is a little bit difficult but we finish in May and we have the time Laurent Robert

And he says he was not put off by Derby's precarious league position: "I know the situation is a little bit difficult," Robert said.

"But we finish in May and we have the time to take some points and stay in the Premier League.

"We have a good group and good players. I've come here to give me experience and to work hard.