The right-back asked to be left out of England's squad for the upcoming European Under-21 Championship games as he is considering representing the country of his birth.
He made his England Under-21 debut later that year after being contacted by Ghana in 2020.
England Under-21 head coach Lee Carsley says that Lamptey is considering the offer.
Carsley said that he was left out of the squad for a bit of head space.
He is not switched, but he has an approach and we respect that.
We have made it clear how important he is to us. The senior team has as well.
Tariq is aware of how important he is to us.
I probably pushed him. You have to make it clear many times. He knows where we stand. He has a decision to make.
Five players who play in the right-back position for England are named in the squad for the Nations League games.
Lamptey, who has two Under-21 caps, has also played for England Under-18s and Under-19s.
The former Chelsea full-back made 14 appearances as a substitute and started 16 times for the Seagulls.
Chris Hughton is working as a technical advisor to the team that will play in the World Cup finals.
Group H includes Portugal, South Korea and Uruguay.
England are in second place in Group G of European Under-21 Championship qualification, three points behind the Czech Republic.
They will play the group leaders on 3 June, followed by a home fixture with Albania three days later, and then a game against Kosovo and Slovenia on 10 and 13 June.