Bolton defender Matt Mills expects the Trotters to face a tough test against his former boss Sean O'Driscoll's Nottingham Forest.
Mills played under the 55-year-old at Bournemouth and Doncaster, and the centre-back is sure Forest will be a decent outfit with his old mentor at the helm.
"Sean's someone I've worked with a couple of times in my career," Mills, who joined Bolton from Leicester this summer, told www.bwfc.co.uk. "I have no doubts that he'll get them playing football, he's a manager who likes his sides to play the game in the right way."
He added: "It'll be a very intense game, as our two previous outings (a 2-0 loss at Burnley and 2-0 home win over Derby) have been."
Following their relegation from the Barclays Premier League last season, Bolton are one of the higher-profile clubs in their division and Mills is wary of other Championship sides looking to upset the odds against the Trotters this term.
"The majority of the teams coming to the Reebok this season will be looking for a scalp," the 26-year-old said. "We need to be ready for that, because it won't be easy."
As well as new owners and a new manager, Forest also have several new players from last season and one of the latest arrivals, striker Simon Cox, marked his first start for the Reds with a goal in Tuesday's 1-1 draw at Huddersfield.
The 25-year-old feels the performance Forest delivered in that match, which followed a 1-0 home win over Bristol City on Saturday, offered plenty of encouraging signs.
"We will be very difficult to beat if we can play to that level for the rest of the season," said Cox in the Nottingham Post.
"We played some good football and, if we can produce that standard regularly, we will do well."