I don't think the both teams were underestimated judging by there poor performance this season,I think this is the right odds to fit them in. Matches like this won't be a problem to predict as the outcome will likely happen in favour of the Home team's. Both home teams are playing to qualify for the top 5 and wouldn't want to loose in any of their remaining games including this one. There will play everything within their energy and would unleashed the best in them to defeat their opponents with a victory. However Manchester United and Tottenham doesn't have a records to achieve in that matches,the both teams will be resting their key players ahead of the Europa League Final and wouldn't risks their players for any possible injuries or Red cards. This Europa League Finals is their possible ticket and elevation to the Chiampions league for who will come out victorious on that day. Let's say,Aston Villa and Chelsea fc  will win with plenty goals over Manchester United and Tottenham.