What lead to the delay has been said to be a minor Injury but then, that doesn't mean Borrussia Dortmund wouldn't go on with the deal. They have not made any further comments about getting him completely or not, I'd go see what Fabrizio Romano update says about the deal. I would love to see him swing that way though, let's see if they can be able to win the Bundesliga League Competition next season.
At almost 30 years of age, it seems like this player is already prone to injury because last season while defending Stuttgart he was injured twice (correct me if I'm wrong). I'm worried that this situation will cause Dortmund to be at a loss next season if this player gets injured again. .
Indeed, the injury he suffered while playing for the Guinean national team was not too serious, but if it happened at Dortmund it would give him a lot of rest, while Dortmund needs a striker to help him perform better next season.
But reading the news on Twitter, it seems like Dortmund is still trying to complete the transfer of this player, but honestly, Stuttgart's transfer fee is very expensive considering the player's track record of injuries. Dortmund must be smart in negotiating so that Stuttgart releases the player at a cheaper price.