League Final Lazio On 3 July 2018, Berisha joined Serie A side Lazio, on a five-year contract. Lazio reportedly paid a €7.5 million transfer fee. On 4 October 2018, he made his debut with Lazio in the group stage of 2018–19 UEFA Europa League against the German side Eintracht Frankfurt after coming on as a substitute at 64th minute in place of Sergej Milinković-Savić. Three days later, he made his first Serie A appearance by entering in the 85th minute of the 1–0 home win over Fiorentina in place of Ciro Immobile. Loan at Fortuna Düsseldorf On 30 January 2020, Berisha joined Bundesliga side Fortuna Düsseldorf, on a six-month-long loan. Two days later, he made his debut in a 1–1 home draw against Eintracht Frankfurt after being named in the starting line-up. Reims On 9 July 2020, Berisha signed a four-year contract with Ligue 1 club Reims and receiving squad number 14. Reims reportedly paid a €5 million transfer fee. On 23 August 2020, he made his debut in a 2–2 away draw against Monaco after coming on as a substitute at 56th minute in place of Dereck Kutesa. International career Norway Berisha has amounted over forty appearances for all of Norway's age-specific national sides. He has played in all four of Norway under-21 side's four games during the 2013 European Under-21 Championship qualification campaign. He scored Norway's only goal in the 2–1 loss against England under-21 side. On 23 November 2011, Berisha was called up to mostly domestic-based Norway squad for the 2012 King's Cup in Thailand. He was one of fourteen players who made their international debut at the friendly tournament which ran from 15 January until 21 January. Berisha made his debut for the national team when he replaced Alexander Søderlund as a 62nd-minute substitute in a 1–1 friendly draw against Denmark League XI on 15 January 2012. He started the remaining two games of the tournament against Thailand and South Korea U23. When asked whether he agreed with the plaudits he had gained from the press and coaches at the tournament, Berisha said, "I am very happy ... I've tried to show that I can work hard both ways, that I can take initiative with or without the ball, in challenge and with speed – I feel I've managed well." On 14 February 2012, Berisha was called up to play Northern Ireland on 29 February 2012.