The Morocco international made the switch to Groningen from Sparta Rotterdam back in 2014 and has impressed since then in the Dutch top flight.
Leeds head coach Thomas Christiansen is keen to bolster his attacking options at Elland Road and versatile Mahi appears to have caught the eye of the West Yorkshire giants.
The Whites have exploited the Dutch market on two occasions over the summer with forward Jay-Roy Grot and midfielder Mateusz Klich joining from NEC Nijmegen and FC Twente respectively.
Spanish outfit Leganes are being linked with a summer swoop to sign Swansea City striker Borja Baston
Brighton's Leon Balogun could miss Nigeria's World Cup opener against Croatia on Saturday after he missed training due to injury.
David Wagner's decision to sign a new deal was crucial for Huddersfield to bring in their transfer targets, according to Dean Hoyle.
Barcelona have been linked with a bid for Manchester City midfielder Ilkay Gundogan as they look to replace Andres Iniesta this summer.
Liverpool are set to switch their focus in the search of a new goalkeeper with Alisson reportedly close to joining Real Madrid.