So far no name has been linked to Dortmund as Gittens's replacement. They have still Duranville, which is good enough, but only lack of minutes.
I think he can develop even further if his club gives him enough minutes. He still has a lot of upside. Nevertheless, adding a new winger is a must to increase the depth in their LW position.
I guess and think that Duranville will not the one that take the replacement for Gittens , we will see for sure some transfers soon.
There are a few postions where they would be good for getting some or good players.
The defense mostly is and was the problem so fingers crossed they can manage something here.
Temporary replace is possible but for long term, i'm not sure. I remember they have been linked to the Sancho, but it seems they already walked away from chasing Sancho. Still waiting for the new name to appear, and i hope to see that in the coming days.