The Brighton right-back is mulling over his international future but Carsley has not given up hope he will stay with the Three Lions.
Lamptey qualifies for Ghana through his parents and has been given time to make his decision.
“He’s had an approach. It’s something he’s considering at the minute,” said Carsley.
He’s had an approach. It’s something he’s considering at the minute
Lee Carsley on Tariq Lamptey
“He’s asked to be left out of the squad for a bit of head space. He’s not switched, it’s not cemented or anything like that but he’s had an approach (from Ghana), we have to respect that.
“We’ve made it clear how important we see him to us. I know the seniors have as well.
“It’s not something that we’ve given up on. Tariq is fully aware of how important we see him.
“You have to treat each player as an individual. In my time while I’ve been head coach of the 21s, I don’t think we’ve had him available yet.
“I had him a couple of times when I was assisting before. I’ve seen what a talent he is. He’s got a lot of ability.
“We think really highly of him but ultimately it’s got to be down to that personal preference of not only where he sees it but where his family sees it as well.”
Lamptey has two Under-21 caps having also played for the Under-18s, Under-19s and Under-20s but Carsley understands he cannot force him to stay.
Lamptey has had several “good conversations” with Carsley about the situation, and Carsley believes senior manager Gareth Southgate has also spoken with the Albion right-back.
Trent Alexander-Arnold, Reece James, Kyle Walker, Kieran Trippier, James Justin, Kyle Walker-Peters, Tino Livramento, and others are among England’s options in this position.
Carsley added: “I’ve definitely got to give him a bit of space now. We’ve got a squad of players there that are desperate to play for England.
“I wouldn’t want to leave one out to bring one in that’s unsure, I don’t think that’s fair.
“He would be a big loss. We do have some really good right-backs but that doesn’t mean we should become blasé about our players.
Lamptey had a decent campaign, making 30 appearances and recording two assists.
