The striker had parted with the West London outfit on loan at Dortmund in order to gain more first-team experience, and notched nine goals from 14 outings for the Bundesliga team.
However, the Belgium international was seen at parent club Chelsea's training ground in Cobham on Friday, in order to progress with his recovery and rehabilitation.
Batshuayi moved to Chelsea from Marseille in a £32million transfer but struggled to impress at Stamford Bridge, tallying only seven goals from 32 appearances in the Premier League.
The 24-year-old will be striving to get to fitness ahead of the World Cup in Russia this summer, where he will compete with the Belgian team in the group stages against England, Panama and Tunisia.