The first ODI will be played in Bristol on Monday.
"England lost to Sri Lanka earlier in the summer and India have just been hurt in the last three weeks, and both the teams will want to correct that," said Fraser.
"At the same time, they have to start preparations for the World Cup in Australia-New Zealand, and try to identify players who will be suited to the conditions there. So it is a tough balance between winning this series and getting ready for the World Cup, and both sides will be searching for it," he added.
For this series, the hosts have made a couple of changes from their ODI series loss to Sri Lanka, dropping Ravi Bopara, Michael Carberry and Tim Bresnan.
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Alex Hales was drafted in to open alongside skipper Alastair Cook while Steve Finn was brought in for Stuart Broad who will miss the series owing to his long pending knee-surgery.
"That tri-series in Australia will be a dress-rehearsal, a mini-World Cup before the real event, and I think all three sides will play their World Cup squads there, more or less," he added.
India too have a couple of 'young' additions to their squad with Sanju Samson and Karn Sharma part of the set-up. The selectors back home have also sent forth Dhawal Kulkarni and Mohit Sharma to try out their options ahead of the World Cup.