Newcastle United legend Andy Cole has warned the club must buy players in January or risk facing relegation.

The Magpies lifted themselves out of the relegation zone with a win over Watford on Saturday, their first of the season.

But Cole thinks manager Rafa Benitez needs more quality if Toon are to avoid the drop.

"In the Premier League, you have got to invest," said Cole, who was also inducted into Newcastle's Hall of Fame at the Foundation dinner.

"If you don't invest, you are going to struggle. Whatever happens, in January they are going to have to invest.

"There are a lot of teams around Newcastle United at the moment - that could get see them get drawn into a relegation battle, and they don't want that."