The former England under-21 boss went to watch the Tractor Boys in action recently, and feels that an attacking approach could be their undoing - even if he rates the in-form side highly.
He told Forest's website: “I went to Ipswich’s game against Wigan and they left three players up front when they were defending.
“They’re very athletic – a very big side. I think it will be our toughest game of the season. They’re undefeated in five, winning four of them, and Mick is an outstanding manager.
“It’ll be a tough game, but an exciting one I think.”
Forest are winless in their last three games in all competitions, and have not score in either of their last two Championship games.
He knows that as a result of Forest leaving three players up, they must be careful not to over-commit and get caught on the break.
Ipswich have however scored only one goal this season on a fast break, while Forest are yet to concede one.
It however shows that Pearce is paying real attention to detail and rates Ipswich very highly, and does not want to take any risks.