Defensive midfielder Pape Bouba Diop, who scored in the semi-final against Nigeria, joined Lens from Swiss side Grasshoppers.
But Diop will not feel out of place - Lions EL Hadj Diouf, Pape Sarr and Ferdinand Coly are already at the club.
Another to leave Switzerland was troubled striker Pape Thiaw, who had sat out 12 matches at Lausanne after attacking an opponent.
He was bought by second division Strasbourg, where Senegal's back-up right back Habib Beye is having a fine season.
The last to arrive in France was Pape Malick Diop.
The former national team captain, who previously played at Strasbourg, was snapped up by strugglers Lorient on 25 January.
Were Morocco-based goalkeeper Omar Diallo to sign for a French club, Metsu would have a full African Nations Cup squad playing in his homeland.
By contrast, the France team, who Senegal play in the opening game of the World Cup on 31 May, are likely to select just four or five players from the French league in their 23.