Mike Dodds, who oversaw Bellingham's rise from a seven-year-old in the Birmingham academy right through to their first team, says the Liverpool transfer target will make a strategic and long-term decision about what he does at the end of the season.
Dodds, who now works at Sunderland, reckons Bellingham's choice won't be motivated by how much he can earn and instead says the 19-year-old's plan will be well thought out by him and his parents.
"When he left Birmingham, he had a lot of choices and he had a lot of decisions [to make] and the decision he made was a footballing decision," Dodds told Sky Sports News.
"Now whether he decides to stay in Germany or whether he decides to move back to England or whatever club, that decision will be a football decision, it won't be a financial decision. It won't be an egotistical decision, if that's the right phrase to use?
"Whatever decision he makes, it will be calculated, it will be really well thought out. He will think about all the pros and cons and he'll make the best decision for what is the next stage of his career."