Midfielder David Vaughan believes Wales would have a bright future under Brian Flynn - if the players can secure the manager's job for him this week.
Wales face Switzerland in Basle on Tuesday in the second and final match of Flynn's spell as caretaker boss, needing to win to retain any realistic hope of qualifying for Euro 2012.
Vaughan said: "We have just got to pick ourselves up for Tuesday. We have only had a few days' training with him [Flynn] but if he is around long term I think you will see the benefits in the performances."
Flynn was put in charge for this month's double-header against Bulgaria and the Swiss, and after defeat in the first of those matches on Friday he now has just one remaining chance - on his 55th birthday - to impress.
Wales have no points after two games in Group G and another loss would all-but end their campaign just a month after it began.
Vaughan continued: "No one wants to let him down and hopefully he will get the job, regardless of the results, if we play well. Hopefully we can do the job for him. It is going to be very difficult to qualify but we have just got to try to win every game and we will see where we go."
Flynn, who has impressed in charge of Wales Under-21s, was asked to oversee the senior side when John Toshack stepped aside after defeat in Montenegro last month.
Vaughan believes Flynn has already made a difference, even though the team could not avoid a 1-0 loss to Bulgaria at the Cardiff City Stadium.
The 27-year-old Blackpool player said: "We were disappointed to lose the game. I thought we created enough chances to at least get a point. The performance was a lot better than it has been over the last few matches.
"Hopefully we can just keep going and produce a good performance on Tuesday. Brian urged us to get on the ball and play from midfield and just be a bit more attacking. The goal took the wind out of our sails a bit, but it was a good finish and these things happen at this level."