Black Stars captain, Andre Ayew has welcomed new players to the national team ahead of the friendly games against Brazil and Nicaragua.
Spain-based Williams, Brighton wing-back Lamptey, Stephan Ambrosius of German side Karlsruhe, Ransford-Yeboah Königsdörffer of Hamburg SV, and Southampton defender Mohammed Salisu and Patrick Pfeiffer of German second-tier side, Darmstadt 98 have all completed their nationality switch to play for the West African country.
Except for Pfeiffer, the remaining five players have been named in the Black Stars squad for the pre-World Cup friendlies.
The Al Sadd forward speaking ahead of the games has urged the new players to be in the right frame of mind.
“First of all, the fact that they considered themselves as Ghanaians and are ready to play for Ghana means they are welcome," he told Graphic Sports.
"We’ll open the door for anybody that can help us to achieve something and for the long term is welcome.
“They should come with the right heart and the right idea and everyone will welcome them into the team," he added.
Ghana plays Brazil at the Stade Oceane in Le Havre on September 23 and against Nicaragua in the South-eastern Spanish city of Lorca four days later.