first of all why the hell would he let the cops search the house if he knew there were drugs present????? make the cops get a search warrant....
well he's not positively not guilty but the law assumes all people are innocent until proven guilty... so why not take advantage of that and make the state prove your friend is guilty
however with this type of evidence a trial would be very costly and most likely result in a guilty verdict (unless your friend gets an incredible attorney) and there's not way of saying for sure what the verdict would be
once again your friends best bet is to listen to what the prosecutor has to offer in terms of a deal... and to HAVE AN ATTORNEY PRESENT

