The Morocco defender joined BVB on a two-year loan deal on Wednesday, and the German giants have also negotiated first refusal on the defender.
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The Morocco full-back is on the brink of a Bernabeu exit after an encouraging World Cup campaign with Morocco.
Morocco recently bid for the 2026 tournament but were beaten by a North and Central American coalition of USA, Mexico and Canada.
The dust has settled on Africa's World Cup contribution, but how did each of the continent's sides fare?
Last month, Morocco missed out to a joint bid by the United States, Mexico and Canada in the vote for the 2026 finals.
Only days after the Atlas Lions' World Cup exit, the midfielder's car was involved in a collision which left a pedestrian dead.
Morocco also lost their group opener to Iran and were angry following their loss to Portugal, their second group game, that had eliminated them.
If Senegal crash out of the World Cup on Thursday, it will signal Africa's worst performance at the finals in almost 40 years.
To say that VAR and the referee's officiating has overshadowed Morocco's World Cup campaign would be an understatement.
The Frenchman oversaw an encouraging World Cup campaign for the Atlas Lions despite their early elimination.
Iago Aspas levelled for Spain late on after the officials used VAR to rule that he had not been offside.
Russia 2018 has not been a great tournament for the Arab world with all four representatives crashing out with a game to spare. But why?
Morocco coach Herve Renard declined to talk about his future with the national team following an encouraging and defiant 2-2 draw against Spain.
Spain won Group B despite a 2-2 draw with Morocco, but if they are to be a real contender they will need to tighten up in defence, and quickly.
Morocco were moments away from a famous victory against Spain when Iago Aspas levelled late, but redeemed their campaign with a fine display.
Morocco were denied a shock World Cup win against Spain in their Group B finale on Monday when VAR overturned a late offside call in a 2-2 draw.
Spain were drawing 1-1 with Morocco at halftime in their final World Cup Group B match on Monday.
Spain and Portugal can't afford to lose or they could miss out on the knockout stages from Group B. Uruguay beat Russia for Group A's top spot.