Fulham On September 11, 2019, it was announced that Las would join
Fulham from the academy of MLS team
Chicago Fire FC.
Loan to North Carolina FC On April 21, 2021, Las joined
USL League One side
North Carolina FC on loan ahead of their 2021 season. He made his debut on June 5, 2021, in a 2–1 loss vs.
Fort Lauderdale CF. His first clean sheet came in a goalless draw vs.
Tormenta FC on July 3, 2021. In August, his loan ended and he returned to Fulham.
Loan to Harrow Borough FC In August 2021, Las joined
Southern Football League side
Harrow Borough FC on loan. He made his debut on August 14, 2021, in a 2–1 loss vs.
Yate Town FC. He made a total of 7 appearances and kept 1 clean sheet whilst losing 4 games and winning 3. He then returned to Fulham in September 2021.
Return to Fulham On November 19, 2021, Las made his debut for
Fulham's under-23 team in a
Premier League 2 match vs. Stoke City. On November 24, Las made his first appearance in a matchday squad for
Fulham, but was an unused substitute in a 0–0 draw vs.
Derby County.
Austin FC On January 25, 2022, Las moved to
Major League Soccer side
Austin FC, who acquired his homegrown rights from
Chicago Fire.
Austin FC II During the 2023 season, Las was loaned to the Austin FC II team, where he has started every game of the season. On June 26, 2023,
Major League Soccer that they were bringing back goalie wars and Las was one of the four MLSNextPro players selected for the competition. Three days later the MLSNextPro midseason awards were announced and Las was selected as the goalie for the first half of the season. At the end of the
2023 MLS Next Pro regular season, Las was named the Goalkeeper of the Year and to the
2023 MLS Next Pro Best XI.
Louisville City FC On January 29, 2024, Las was loaned to
USL Championship club
Louisville City for the
2024 USL Championship season. Playing the entire season as the starting keeper for Louisville City, Las was part of the players that earned the Players Shield for 2024. Las joined Louisville in the 2025 pre–season on a second loan from Austin FC. For the second season in a row, Las played in integral role in Louisville finishing atop the table and earning the USL Championship Player's Shield. At the end of the 2025 regular season, Las was named the Golden Glove winner. == International career ==