Howe has revealed improving the physical stature of their options has been a target in the transfer market.
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He said, "I think it's always been vital for me that you have, as I said, the height in the right areas of the team, because if you don't, I think it does give you problems.
"You can have a very, very good player for the position, but if you're looking around and going, well, if these group of players are going to play with each other, we're not going to be big enough, that can give you long-term problems.
"So it's always a talking point within the coaching staff, when we're looking at players and what positions and what profiles, how big they are."