"Their early season form wasn't so good," he said of Forest, "but they are in very good form now and will be looking forward to taking us on.
"They have a lot of good options around the pitch and we expect a tough game."
Newcastle have won three of their five away fixtures in the Championship to date, walloping Ipswich 4-0 on the road last time out.
Former Reds star Marlon Harewood returns to the City Ground hoping to continue a good record of scoring against his old club.
The 30-year-old, who is on loan from Aston Villa, enjoyed some productive returns to the banks of the Trent while with West Ham.