Huddersfield midfield star Lewis O'Brien will cost Nottingham Forest big money this summer.

The 26-year-old is someone who manager Steve Cooper admires, as he looks to improve his team ahead of their first season back in the Premier League.

The Sun reports that Forest are prepared to bid in the region of £10 million for O'Brien.

However, the 23-year-old is also wanted by Leeds United, which means Huddersfield are likely to push a bidding war.

The Championship club will want to ensure they can extract a significant fee for the talented O'Brien.