Bayern Munich striker Robert Lewandowski's future is still up in the air as he has not yet signed a new deal with the German club.

The Polish striker has been linked with Barcelona -- his agent, Pini Zahavi, has met with the Catalan club -- and his wife has now dropped a big hint that a move to Spain could be on the cards.

Anna Lewandowska revealed on Instagram on Friday that she has started learning Spanish.

"Hello guys," she wrote at first, in English. "I am starting to learn Spanish. Any tips? Let me know!"

Then, below, now in Spanish, she wrote: "¡Hola a todos! Buenos días desde Mallorca. Es genial que estoy aquí de nuevo (Hello from Mallorca everyone! It's great to be here again)."

Her message has led to questions from Lewandowski's fans, who are wondering if it could be a clue that a move to Barcelona is imminent. Or is it just a coincidence?