Harry tried to hide a smile as he directed a common scourgify at the disgruntled cross-breed, which worked perfectly, fluffing Crooks up to double his size.
"Come on. We can Floo McGonagall and see if she'd be willing to part with him before we get his hopes up." Harry knew if he even looked needy, Dobby would come running in a heartbeat. Where to work was the elf's choice - he was free, as they all very well knew - but Harry didn't think it would be wise to get on the Headmistress' bad side by stealing away labourers from the school. "She won't say 'no' to you."
At least, Harry didn't think so - at least, he knew he never could.