Sky News is reporting that CoStar Group, a $33bn (£27.2bn) property group, is to buy OnTheMarket (OTM) in a £100m deal that is expected to be announced tomorrow.

The OnThe Market Board is expected to recommend the offer to shareholders and the price will likely show a large premium on OTM’s closing share price today of 70.5p

A source reported to be close to the negotiations is reported as saying the deal will give OnTheMarket the wherewithal to take on both Rightmove and Zoopla for top portal position.

EYE has approached OTM for comment.

OTM will release its interim results tomorrow morning at 7am.