Striker Odemwingie has been left out of the squad to face Spurs following the collapse of his move to QPR after he turned up at Loftus Road on transfer deadline day anticipating the completion of the deal. Clarke believes Odemwingie can eventually rebuild his career at The Hawthorns but his immediate focus is on Albion ending a five-game run without a win in the Barclays Premier League.
He said: "We have lost a bit of edge. November was a good month for us, December was average and January has been a poor month for us so I'm glad it's February and we can try and move on.
"The players have lost a bit of confidence, it happens when you lose games. Some of the performances have been okay but we haven't got the results. It's time for us as a group of players, me and my staff, to get together with the players and rally round.
"Maybe we can even use some of the events which have unfolded this week and try and use it as a positive stimulus to drive the group forward and get back to the form we were in earlier in the season."
Clarke admitted: "It can be difficult sometimes to pick your form up straight away but we've got to find a way of getting results. The quicker we do that, the quicker we get to our first target of 40 points and then we can reassess and see how many points we can accumulate.
"We still have the possibility to make this a very good season for West Brom and that's what we are going to endeavour to do over the next few weeks."
Clarke worked alongside Spurs boss Andre Villas-Boas at Chelsea and is delighted to see him rebuilding his reputation following his unsuccessful spell as manager at Stamford Bridge. He said: "Andre is a good coach. He had a difficult time at Chelsea. I'm pleased he had the chance to come back in at Tottenham.
"He's done really well with a fantastic group of players. People say I was lucky to come in here with a good group of players. I think Andre also had a great group to come in and work with but he's done his job really well.
"The team play good football, he's got some fantastic individuals, it's a great challenge for us. It's a game where most of the people will expect Tottenham to win but they are coming to The Hawthorns where we've got a really good record this year. It's a challenge my players are ready for."