Newly-promoted from League One, Milton Keynes have struggled so far but showed their quality earlier in the week when beating play-off contenders Sheffield Wednesday.
Previewing Saturday's game at the City Ground, Freedman told the official NFFC website: "We've worked harder than we’ve probably ever worked on a game because I understand, while they may not be performing fantastically well week in, week out, they have that element of surprise which they showed on Tuesday night."