DONS have extended loans for both George Moncur and Billy Knott until the end of the season.
The worry for Brown is that Knott picked up a hamstring injury in the 2-0 defeat to Southend and now awaits word to see if the on-loan Sunderland midfielder can face Crawley on Saturday.
Knott went down in a heap on 36 minutes admist a tangle of bodies – but as Brown pointed out the extended loan was a done deal before the game.
He said: “We’ll just have to wait and see how Billy is, but we just lost three centre halves – I can’t afford to lose two more players and we’ve extended their time with us.”