Tottenham midfielder Gylfi Sigurdsson says this weekend's derby against Arsenal is a must-win.

Spurs have slipped to seventh in the table after a poor run of results.

Sigurdsson said: "We went to Old Trafford in September and got the three points and, apart from a couple of off days, we have been doing well.

"We were on a good run, but after Wigan we want to put that right, win games and try to stay up there with the top teams.

"We have got a couple of really important games coming up and if we pick up the points in those games we can be right up there around Christmas time."