But Reuters reported that any of its rivals who were hoping that the EU's move, to get Google to halt unfair business practices, would help them could end up unhappy.
The fine was expected to be announced last week but the announcement was put off, reportedly due to the visit to Europe by US President Donald Trump.
The European Commission, the executive arm of the EU, normally makes such announcements on a Wednesday.
EU regulators say that Google has forced smartphone manufacturers to install its search plus the Play Store and Chrome browser and asks other manufacturers to agree not to sign deals with its Android rivals.
Analyst Richard Windsor, of the research firm Radio Free Mobile, told Reuters that any EU action was likely to be too late.
“Users in the EU are now completely accustomed to using Google services and have come to prefer them,” he said.
“Hence, I think separating Google Play from the rest of Google’s Digital Life services would have very little impact as users would simply download and install them from the store."
No matter when it is announced, the fine would be the second levied by the EU on Google. In June last year, Google was fined €2.42 billion (US$2.7 billion) for allegedly abusing its search engine dominance to give illegal advantage to its own comparison shopping service. The company has appealed the decision.
A third fine is said to be in the EU pipeline, this for alleged anti-business practices involving Google's AdSense advertising system.
The EU has also floated the idea of breaking up Google into a number of smaller units, with EU competition commissioner Margrethe Vestager saying the political bloc harbours "grave suspicions" about the firm's dominance of the search market.
Brussels is not the only one to fine Google for anti-business practices. In February, the Competition Commission of India hit the company with a fine of 135.86 crore rupees (about US$21.1 million) for "abusing its dominant position in online general Web search and Web search advertising services in India".
Google and other big multinational technology companies are also under pressure over alleged tax evasion, with the EC having unveiled a proposal to tax these companies at a rate of 3% as an interim measure.