I'll be here next season - and so will Lamps - insists Chelsea boss Avram Grant

Lampard, left out of Grant's side because of injury for the FA Cup defeat at Barnsley, smashed four goals in Chelsea's 6-1 demolition of Derby at Stamford Bridge last night.

The 29-year-old opened the scoring from the penalty spot in the 28th minute and then hit a stunning second-half hat-trick to close the gap on leaders Arsenal to just five points at the top of the Barclays Premier League.

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Lampard was assisted with goals from Salomon Kalou and Joe Cole while Derby substitute David Jones scored a consolation effort for the rock-bottom Rams.

The Chelsea midfielder has yet to sign a new contract at Stamford Bridge but Grant revealed he is already in his plans for next season.

But Grant declared: "The club wants Frank and he wants to stay so nothing has changed. As for the negotiations, that is not my area.

"We plan something for next season and I can tell you that Frank will stay in Chelsea, I am almost sure about that. But when I speak with the players it is between them and me.

"He has scored more than 100 goals and I think he will score 150 for Chelsea, I am sure of that.

"Any player who plays like this, is not easy to replace but he is a very important player for the team.

"He can score and he can also defend. The situation with Frank has not changed."

Chelsea were in complete control against doomed Derby and the only surprise was that it took them 28 minutes to open their account.

Grant, whose own future at the club came under scrutiny following their Barnsley nightmare, made five changes from the side that crashed out of the cup at Oakwell.

It was a smart move as Chelsea were different class and the 52-year-old Israeli believes they are still in the hunt for a crack at the title.

Grant added: "I think we have won more than 80% of the games in the league since I came. It is enough to be close to the top two and maybe the right time to be there.

"But we need to continue to play like we have played most of the league games and then who knows? Anything can happen.

"But I can tell you that we will fight until the end. I never give in and I will not start now."

Derby boss Paul Jewell is ready to wield the axe in the summer to rid the club of their losing mentality and improve the playing standard.

Jewell cannot wait for the season to end so he can concentrate on building his own team.

"Our personnel will be totally different next year," said Jewell.

"Hopefully we will have a different mentality and I can't wait for pre-season to start.

"We just want to get the games out the way and try and come back a more competitive outfit next season.

"Some players will want to leave of their own fruition and some will leave because they are not up to the standard I want.

"Those that want to be here and are good enough will be here but those that don't and are not good enough won't be, it is as simple as that."