Moffi joined Hamburg permanently from Ligue 1 side OGC Nice on Monday, strengthening their attacking options ahead of the new campaign.
Costa is confident the African’s power and goalscoring ability will trouble German topflight defenders and make him an important player for Hamburg.
“We are delighted to have secured the signing of Terem. Terem is a striker who is difficult to contain due to his physicality, determination, and playing style,” Costa told Hamburg’s website.
“He is capable of making runs in behind the defense, has a tremendous presence in the penalty area, and possesses the necessary quality with his back to goal.
“We are convinced that Terem will add extra firepower to our game and thus further enhance the versatility of our squad. Now, the task is to integrate him quickly so that we can start the new Bundesliga season as a team with plenty of energy and confidence.”
The 27-year-old brings considerable experience, having played in six countries during his career. He has scored 88 goals and provided 13 assists in 228 club appearances, while contributing six goals and two assists in 23 games for Nigeria.