Le Drian was in Khartoum for a one-day visit, the first such trip to Sudan by France's top diplomat in more than a decade.
South Sudan split from the north in 2011 after decades of bloody war with Khartoum, famously becoming the world's youngest nation
Abdalla Hamdok, who heads an 18-member cabinet as Sudan transitions to civilian rule, will travel to Juba on Thursday and return the next day
The announcement had been delayed for days as Prime Minister Abdalla Hamdok mulled over proposed nominees
Sudanese officials have complained that the blacklisting has hampered economic growth by discouraging foreign investment
The top German diplomat is expected to meet with the newly-appointed Prime Minister the head of Sudan's ruling body