Max Mosley has softened his stance over the controversial budget cap by telling Formula One teams he will negotiate with them next week, providing they meet Friday's deadline for entries for 2010.

The eight F1 teams who have only entered on the condition that the £40million limit is ditched had previously been told by the FIA president they should go and form their own championship if they do not fall into line.

But Mosley has now written to the teams urging them to submit unconditional entries by the deadline and then next Tuesday present new proposals which will form the basis of further talks.

Mosley wrote: "We are ready to begin discussions immediately with a view to signing an agreement without delay. However, there is no possibility of this being concluded in advance of settling the 2010 entry list, a draft of several hundred pages having been produced at the last moment.

"There will certainly be new teams next year and it presently seems unlikely that all of the 2009 teams will participate in 2010."

Of the existing teams, only Force India and former champions Williams have submitted unconditional entries.

Mosley said the published 2010 rules could not be changed without the consent of all the competitors entered in the championship.

"Once we have a list of confirmed entries, we can make changes provided we have the necessary unanimous agreement," he said.