This makes sense. Russia seeks to continue and expand control over at least some ex-USSR countries of which Ukraine is the second largest (Russia being the largest). Putin wants to further Russia's trade with the EU because it's profitable, but he does not want Ukraine, Belarus, etc. to do the same independently. From his point of view it's best if Russia trades with the EU, while Ukraine trades with Russia. That way Moscow controls exactly what Ukraine can and cannot get/do.