 Marcus Forss | Team | Middlesbrough |
| Nation | Finland | |
| League | 13th in EFL Championship Table | |
| Shirt No. | 21 | |
| Position | FW | |
| Join Date | 28 Jul 2022 | |
| Age | 23(18 Jun 1999) | |
| Height | 182cm | |
| Former Club | Brentford | |
| Once Clubs | Brentford,Hull City[on loan],AFC Wimbledon[on loan],Brentford Reserve,West Bromwich U18 |
| Round | Date | HomeTeam | Score | AwayTeam | H2H | Stadium |
| 25 | 30 Dec 03:45 | Blackburn Rovers | VS | Middlesbrough | h2h | Ewood Park |
| 24 | 26 Dec 23:00 | Middlesbrough | VS | Wigan Athletic | h2h | Riverside Stadium |
| 23 | 17 Dec 23:00 | Burnley | VS | Middlesbrough | h2h | Turf Moor |
| 22 | 10 Dec 23:00 | Middlesbrough | 2-1(1-1) | Luton Town | h2h | Riverside Stadium |
| 21 | 12 Nov 23:00 | Norwich City | 1-2(1-0) | Middlesbrough | h2h | Carrow Road |
| Date | From | To | Fee | Transfer |
| 28 Jul 2022 | Brentford | Middlesbrough | 4M EUR | Transfer |
| 31 May 2022 | Hull City | Brentford | End Of Loan | |
| 31 Jan 2022 | Brentford | Hull City | loan transfer | |
| 14 Jan 2020 | AFC Wimbledon | Brentford | End Of Loan | |
| 01 Jul 2018 | Brentford B | Brentford | ||
| 01 Jul 2017 | West Bromwich Albion U18 | Brentford B | Free Transfer |
| Date | Team | Matches | Goals | Assists |
| 14 Jan 2020~31 Jan 2022 | Brentford | 53 | 11 | 1 |
| 31 Jan 2022~31 May 2022 | Hull City | 11 | 1 | 1 |
| 31 May 2022~28 Jul 2022 | Brentford | 12 | 6 | 2 |
| 28 Jul 2022~Now | Middlesbrough | 3 | 1 | 0 |