The inaugural Aegon Manchester Trophy welcomes Marcos as its top seed, as he makes his 2015 grass-court debut.
Marcos will look to improve on a 7-3 record on the ATP Challenger Tour this year and 10-2 mark on grass on the circuit in his career. Last year, Marcos won his first title on the surface at the Nottingham Challenger, defeating Marinko Matosevic in straight sets.
Marcos opens his Manchester campaign against British wild card Marcus Willis. One of four Top 100 players in the draw, he is joined by World No. 72 Sam Groth, World No. 85 Malek Jaziri and World No. 95 Ruben Bemelmans.
