The 19-year-old was loaned to Middlesbrough in the 24-25 season, and his performance was impressive.
In January, Ipswich and Crystal Palace were interested in contacting the player, but Liverpool chose to refuse.
Liverpool prefers players to play for Middlesbrough on loan and continue their personal growth and development, and plans to assess whether players are ready to enter the first team in pre-season preparations this summer.
19-year-old Ben Dock plays as a winger. He played in 24 games in the 24-25 season, contributing 3 goals and 7 assists. The price of Deutschland is 14 million euros.