Jordan Rhodes says there will be no questions about his commitment if he makes his Middlesbrough debut against his old club Blackburn on Saturday.
The striker, 25, moved for an initial £9m from Rovers on Monday, ending a three-and-a-half-year stay at Rovers.
"That's the way it is but if involved on Saturday I'll give my all in a red shirt," Scotland international Rhodes told BBC Tees.
"I wish everyone in the blue and white halves all the best in the future."
Despite netting 182 goals in 350 career games, Rhodes expects competition for his place at Boro, alongside fellow forwards Kike Sola, Gaston Ramirez, Cristhian Stuani and David Nugent.
The Teessiders have conceded the fewest goals in the Championship, but their tally of 37 scored is the second lowest among the division's top six.
"There's some real talent and I'm going to have to work hard just to merit a place on the bench," Rhodes added.
"I've played in some good teams with good players. I play in a position where if I don't get the supply then I can't score the goals, so credit does go to my team-mates.
"They (Boro) have got some real creative players so I'm just happy to oblige and happy to try to put the ball in the net if I get the chances."