"He doesn't foresee any problem whatsoever," Sherman said.
Favre was injured early in the third quarter of the Packres' 14-7 loss to the Giants on Sunday when he hit the back of his head on the turf as he was tackled by William Joseph and Michael Strahan. Sat out two plays, but re-entered the game and threw a touchdown pass to Javon Walker that gave the Packers a 7-0 lead. Favre, however, was not permitted by team doctors to finish the game because he was suffering the effects from the concussion and was "groggy."
Favre probably will not practice with the team on Wednesday as a precautionary measure, Sherman said.
"We're watching him very closely, there's no question about that," Sherman said. "Anytime anybody has a head injury ... we will keep an eye on him.
"All indications are that he suffered a concussion that's not a severe concussion at this juncture. We will keep an eye on it."
Favre suffered a hamstring injury on Sept. 26 against the Colts. The 14th-year pro also has been battling a sore left shoulder over the past year and a half.