Not necessarily. If they do well at the club consistently(and the club wins the games overall), and the facilities are good (not a big drop from yours) then they will not complain or be "happy to return", but if they are forced out on loan to a club with terrible facilities, and do not perform well, they will likely be "happy to return" and have a mixed spell.No matter how well they do though it will always say they had a 'mixed spell'.