The talented 18-year-old Geordie is arguably the Magpies' brightest light shining through from the Academy ranks in recent years.
Donachie told the Evening Chronicle: "Adam is always liable to get a goal for you.
"If he keeps his feet on the ground and keeps working hard, it is a great future for him and the young lads.
"They will not let the club down if they are needed.
"It will be great for them. They need regular games either for me, for the first team or on loan. It is the only way to learn. Playing in Europe for them is a great experience.
"For me it is teaching them to become good professionals and getting them league experience somewhere.
"That is the goal all along really.
"They need to keep improving as individuals and become good professionals."