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Manchester United are working on a deal to sign Olympiakos right-back Omar Elabdellaoui, according to his agent.

Five United full-backs are currently sidelined through injury and the 24-year-old Norwegian could ease Louis van Gaal 's defensive concerns.

Elabdellaoui began his career at Manchester City 's academy and his agent Jim Solbakken hinted the Norway international could complete a move to United before Monday night's transfer deadline.

Solbakken said : "The interest of Manchester United is in place. We will see what happens during the night."

Van Gaal revealed in November he wanted to sign a left-back and reaffirmed his desire to strengthen United's defence last month, only he said he wanted a 'full-back'.

M.E.N. Sport revealed on Sunday United were attempting to sign a right-back on loan and Elabdellaoui could offer Matteo Darmian competition.

Watch Van Gaal speak about United fans' booing:

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Full-backs Darmian, Antonio Valencia, Ashley Young, Luke Shaw and Marcos Rojo are all injured, which has forced Van Gaal to integrate youngsters Cameron Borthwick-Jackson and Guillermo Varela into the first-team.

Elabdellaoui never played for City's first-team and made the substitutes' bench just once.

On the winter window's deadline day in 2012, United signed Swiss defender Freddie Veseli from City on a free transfer.