Brentford boss Thomas Frank expects a battle on Wednesday against Wolves.
Wolves will go into the game on the back of victory over Chelsea on Christmas Eve.
Frank said of Wolves rival Gary O'Neil, I think he's done a good job.
I think he did a brilliant job at Bournemouth - keeping them up was one of the best achievements in the Premier League last year. He did an amazing job there.
[Wolves] are more energetic now. They're well organised and you can see that they are trying to build something which looks promising for the future. They have got some really good players."
Frank added: We need a good performance. We need to come out with big intensity, press very aggressively and have that more complete performance.
When we are attacking, we need to be close enough together so we can, in spells, pack them in."