Margetson has never earned a full Welsh cap but has not given up hope. A run in the City first team will keep him in the thoughts of Hughes.
"One of my main ambitions is to get a game for Wales," Margetson told the Western Mail.
"I'm patriotic and I would love to play for my country. It is a bit frustrating to see other goalkeepers getting picked ahead of me, but hopefully I'll get my chance one day.
"I can only do my best for Cardiff and hope something comes from that."
Margetson is also hoping for a new City contrcat. His current deal runs out in the summer and he wants to stay at Ninian Park.
"It is down to me now to prove I'm worthy of a new deal at City. For the contract, I don't think anything will be happening until the end of the season. I definitely want to stay and I have made no secret of that fact."
"The manager hasn't mentioned anything to me about a new contract."
When asked about Margetson's future Lennie said
"The contract situation will be dealt with, with Martyn and everybody else, when we feel we're in a position to do so.
"Martyn is in the team, that is his main concern and he needs to stay there. He got his chance and he hasn't let himself down in any way and everything else will follow on."
Margetson has now played the last 6 games for City. After starting with defeat at home to Walsall, an away defeat at Watford and a home FA Cup reverse against Sheff Utd things have improved. City have won two and drawn one of the last three games with clean sheets in the last two outings.