Gareth Bale has been ruled out of Wales' friendly with Spain in Cardiff on Thursday but could return to face the Republic of Ireland next week.
Bale has been troubled by a groin injury in recent weeks, but the Wales medical staff will continue to monitor his fitness and manager Ryan Giggs is hopeful the Real Madrid forward will be fit for the Nations League tie against Ireland in Dublin on Tuesday.
"Gareth has got a little bit of muscle fatigue and he won't be involved against Spain," Giggs said. "We don't want to take any risks and we are monitoring it every day.
"I would say he is 50-50 at the minute for the Ireland game."
Bale has scored three goals in his first four appearances for Real this season but came off in the closing stages of Real Madrid's La Liga defeat at Alaves last weekend.
The 29-year-old has been troubled by a groin injury and Giggs said Bale had been scanned in Madrid a few weeks ago.
"We rescanned it and have done everything we can to get as much information," Giggs said. "There was a little bit on both scans - but there's always something.
"We're treating the symptoms but it's nothing to worry about. Either way, I expect him to be fit for Madrid's next game.
"It's something of nothing but it's a short turnaround and we'll take no chances. If he's available he's available. The medical team are constantly in dialogue with Madrid like they are with every team.
"When you have niggly injuries it's maybe at the back of your mind until you're flying again, but I'm not worried and Gareth isn't worried."
In Bale's absence, Harry Wilson could now be on free-kick duty for The Dragons, following his stunning effort at Old Trafford for Derby last month.
The on-loan Liverpool winger scored a spectacular 30-yard effort to earn praise from Anfield boss Jurgen Klopp and a rebuke from his Wales manager and Manchester United great Giggs.
"He (Klopp) messaged me after the game," said Wilson, who copied the previous Old Trafford goal celebrations of Fernando Torres and Steven Gerrard by holding one hand aloft to show five fingers, referring to Liverpool's five European cups - compared to United's three.
"He just said 'fantastic free-kick, really great football'.
"It's great to hear from the manager whose team you want to be in in the future.
"He (Giggs) did mention a fine to me when I got into camp, but the celebration was just heat of the moment.
"I practice my free-kicks a lot and spend time with a couple of lads to get that technique.
"I think Gareth is definitely top of the pile when it comes to taking them, and rightly so.
"But if he's not on the pitch for one reason or another, I'll be putting my name forward."
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