1st: about money if u are negative in money u have 7days(if i'm not remember wrong) to pay it,after 7days if your team still in negative the system will start to sell your players,begin from the best down.
2nd: about the other bidder full squad,it's possible that he sell/fire 1 of his player be4 bid with u and the system just not update it yet,result on your picture.And it's normal,cus sometime it take up to 1-2days 4 the new player appear in the winner team(from outside view)