Poland striker Lewandowski scored twice as Borussia Dortmund swept aside Mainz on Saturday, keeping them third behind Bayer Leverkusen and Bayern Munich.
Pierre-Emerick Aubameyang gave Borussia Dortmund the lead, but Mainz replied as Eric-Maxim Choupo-Moting brought his side level.
But Lewandowski made it 2-1 from the spot after Elkin Soto was sent off, and the in-form striker made it 3-1 with another penalty in injury-time.
Lewandowski has now scored 15 goals in all competitions this season, and his tally of 11 league goals is two more than Bayer Leverkusen’s Stefan Kiesling.
Such form will only encourage both Arsenal and Chelsea to step up their efforts to sign the striker, who has already revealed the club he wants to join next summer.
It is widely expected that Lewandowski will opt to join Dortmund’s great rivals Bayern Munich, but Chelsea, in particular, are confident that they can sneak in.
The stumbling block for Arsenal could be Lewandowski’s wage demand – but that should present no such difficult for Chelsea owner Roman Abramovich.
Chelsea manager Jose Mourinho sees Lewandowski as the perfect man to lead his attack and an assault on the Premier League title next season.
A substantial offer from Chelsea would almost certainly test Dortmund’s resolve, and potentially allow them to avoid having to see their prize asset join their rivals.
image: © Roger Gorączniak