Hansi Flick has confirmed that Wojciech Szczesny will remain Barcelona's goalkeeper in the Champions League after UEFA rules led to a dilemma over bringing back Marc-Andre ter Stegen. Barca captain Ter Stegen recently returned to full training to step-up his recovery from a serious knee injury earlier this season, after which Szczesny came out of retirement as an emergency signing. The Germany international is free to return in LaLiga but the Champions League is a different story. UEFA say that if Barcelona want Ter Stegen to play in Europe, they'll have to de-register his direct replacement, Szczesny. After biding his time behind academy product Inaki Pena, the ex-Arsenal goalkeeper was installed Barca's No.1 in January and has since been an unlikely hero for the treble-chasing side. Szczesny, 35, helped Barcelona lift the Copa del Rey on Saturday, beating arch rivals Real Madrid in a domestic cup final for the second time this season. Ter Stegen was named on the bench at the weekend for the first time since his injury and the 33-year-old will stay there for Wednesday's Champions League semi-final first leg at home to Inter Milan. Asked if there was a chance that Ter Stegen could play, Flick told a pre-match news conference: "No, Tek (Szczesny) will play in the Champions League, it's clear. "And we're thinking about maybe a change in LaLiga one day, we will see. But it's the next situation. Now Tek will play in the Champions League." Szczesny previously insisted that he'd have no qualms if Ter Stegen were to get the nod for their remaining Champions League fixtures, acknowledging that he'd benefitted from his absence. Ter Stegen suffered a complete rupture of the patella tendon in September and while Pena kept the gloves until January, Szczesny now has them. He and his team-mates were forced to play 120 minutes against Real Madrid, as Jules Kounde's extra-time winner completed a comeback after Barca had squandered their own lead in normal time. Inter played the following day, losing 1-0 to Roma at San Siro, a result which allowed title rivals Napoli to move into first place in Serie A. Unlike Inter, Barcelona are still on for the treble this season, having enjoyed an outstanding first campaign under ex-Bayern Munich manager and Germany assistant coach Flick. "What I can say is that all the players are focused and want to reach the final," the German said. Who'll reach the Champions League final - Barcelona or Inter Milan? Give us your prediction in the comments section. "The win against Madrid is important for our emotions and can help us keep pushing. I think we can reach the final. They'll give it their all, too." Flick added: "Inter will be very difficult; they're one of the best defences in Europe. They have a great midfield and the two strikers are very good. But also the transition they make is very dangerous. So they defend good, but also attack. We have to be ready. "Today we met and talked about what we need to change. They'll have five players in midfield, and we'll have to protect the spaces. It's very important for us to keep possession and reduce errors, they have automatisms, it's very important. We have to be very focused on the ball, as well as defence." Join our new WhatsApp community and receive your daily dose of Mirror Football content. We also treat our community members to special offers, promotions, and adverts from us and our partners. If you don't like our community, you can check out any time you like. If you're curious, you can read our Privacy Notice.