Scott Marshall admits Colchester United are something of an unknown quantity under new head coach Matt Bloomfield.
The Addicks take on Colchester in the Papa John's Trophy at the JobServe Community Stadium on Tuesday in what will be Bloomfield's second game as U's boss having been appointed on Friday.
"Obviously Colchester have got a new manager which makes it a little bit unknown in terms of what we're going to be playing against," explained Marshall. "I'm sure he will be working really hard to stamp his authority and show what he can do and what he wants from his squad. Whether they make changes or not we will just have to have a look at it and deal with what comes.
"It will certainly be a good opportunity for some of our guys to get some minutes. There might be a few changes in there and we'll do what's right for the squad and the lads that could do with some minutes in the game, for sure.
"It will be a case of having one eye on the weekend as well and making sure that everybody is ready to push on and use the game to show what they can do, as you always do," he added. "It's a professional game and it's a chance to go and perform."
The Addicks' Assistant Coach confirmed Albie Morgan and Corey Blackett-Taylor are both available for Tuesday's tie having been absent from Ben Garner's matchday 18 on Saturday, while Sean Clare will be assessed following a bout of illness.
Chuks Aneke remains unavailable as he continues his rehabilitation programme from a calf injury.
"They are available for selection," he said. "We're going out to train this morning and do some preparation for the game and they'll be considered, for sure."
"It's a little bit too soon for Chuks but he's making good progress. Sean is obviously coming back from illness so we'll have a look at that.
"As I say we'll do what's right for the players and who really needs that game in terms of building up their minutes and their time on the pitch."
Marshall provided an encouraging update on academy graduate Aaron Henry, who was forced off during the U21s' fixture at Watford last week with a knee injury.
"I think it's been pretty positive with Aaron," he revealed. "We've just got to be careful with him as there is something in there, but it's certainly a lot better than we first thought.
"I'm not 100 per cent sure on timescales and dates, but we do know it was a positive result."
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