"We can't create a lot of opportunities when we don't have a clear idea, game model, of what we have been putting at training," Nabi said as per KickOff.
"It's true, there are a lot [of] options we're looking at to try to solve the issue, probably bring someone. It's one of the options that might give the solution to the issue.
"It's true, we know that it has been an issue conceding goals, but we need to look at the bigger picture.
"When you don't score, you give the opportunity and morale to the opponent," added the Tunisian.
"That's why we don't want to put the blame on the defenders. We want everyone to work harder, offensively and defensively."