Background
Stengel was born in Lørenskog, and grew up in Hokksund, where he played for Hokksund before he joined Stabæk as a youth.
Stengel was born in Lørenskog, and grew up in Hokksund, where he played for Hokksund before he joined Stabæk as a youth.
He has previously played for Stabæk, and has represented his country at youth level He plays with number 14, after Johan Cruyff. He started playing for their senior B team, Stabæk 2, and became the youngest goalscorer ever in the Norwegian Second Division.
In May 2010 he scored his first senior goal at the age 14 years and 261 days.
In 2009, Stengel did a trial at Manchester United together with Mats Møller Dæhli, who later joined the club"s academy and Sondre Tronstad. In December 2012, Stabæk granted Stengel a week to trial with PSV Eindhoven.
On 2 October 2011, Stengel made his Norwegian Premier League debut, starting the match against Sarpsborg 08. Aged 16 years and 37 days, he became the youngest Stabæk-player to start a match in Tippeligaen, and the then third youngest player in the Norwegian top division.
Stengel became known during the autumn of 2011, as he was a piece of Veigar Páll Gunnarsson"s transfer to Vålerenga, which caused great controversy.
television 2 (Norway) revealed on 12 October 2011 that Gunnarsson was transferred to Vålerenga for 1 million NOK, while Vålerenga paid a transfer fee of 4 million NOK for an option for the then 15-year-old football player Stengel. In February 2012, Stengel stated that he wants to be known as a football player, not as the guy who was a piece in the controversial football transfer, and that his dream is to play in one of the best leagues in Europe. His contract with Stabæk expired after the season and he joined Vålerenga as a free agent ahead of the 2014 season, signing a four-year contract with the club
Stengel scored six goals in twenty-three matches for Norwegian under-15 to under-17 between 2010 and 2012.