Real Madrid have secured first refusal on Arsenal and Manchester United target Marco Reus next summer, according to reports in Spain.

The German international's future at Borussia Dortmund has been questioned in recent weeks after it was revealed he had a special release clause in his contract which allows him to leave the team in summer 2015 for as little as £25m ($15m, €18.9m).

The bargain price has alerted a number of big European clubs, with reports claiming Manchester United, Arsenal, Barcelona, Atletico Madrid and Bayern Munich are all closely monitoring the situation.

But now Spanish newspaper El Confidencial reports Real Madrid will have first option on Reus' future - having already agreed a deal with Dortmund whereby the German giants will inform them if another team makes a bid for the star.

After signing Gareth Bale and James Rodriguez during the last two summer transfer windows, the Champions League winners are said to be considering Reus as their next marquee addition.

El Confidencial also suggests that, after Reus rejected an offer to commit his future to Dortmund last July, the club are already resigned to his departure – and prefer to sell him to La Liga than Bayern.

Nevertheless, Dortmund have seen both Mario Gotze and Robert Lewandowski move to their big rivals in the last two summers and will make any effort to avoid this situation again.

Meanwhile, Spanish newspaper Daily AS recently reported that Real officials met with Marco Reus' agent, Volker Struth, to discuss a future deal for the Dortmund star, taking advantage of their recent negotiations for another of his clients, Tony Kroos.