Standard Liege have confirmed Axel Witsel will join Benfica after the clubs reached an agreement for the midfielder's transfer.
A statement on Standard Liege's official website reads:
"Standard Liege and Benfica have concluded the agreement which will allow Axel Witsel to join the Lisbon-based club for five years."
Transfer details such as the fee and player wages were not disclosed by the clubs.
The 22-year-old Belgium international was previously linked with AC Milan, but is now set for a new career in Portuguese football.
Witsel joined Standard as a 10-year-old and worked his way up through the ranks to win two league titles among other trophies during his time at the club.