Do players accept being loaned out the first season at the club? I'm thinking about signing 2 good goalkeepers for free who I don't need, loan them out 1 season and sell for profit next. Is that possible? Do they accept being loaned instantly?
I think it may depend on their squad status that you sign them to. For example, if you set them as a hot prospect then they will more likely go out on loan since they think they're for the future so need game time to improve, whereas if you put them as backup or rotation then they may feel like they can get some valuable game time at your club and may be more reluctant to leave unless a bigger club than yours comes in for them.
I have a 17 year-old 'keeper from Slavia Prague who I have loaned out to FC Utrecht for the season, with no problems. I signed him as a hot prospect player. I wouldn't expect any grumbles from him until he's in his early-20s.