I made this as a birthday gift to an Arsenal fan.
I used the same approach and models as i did for my Metal Coasters https://makerworld.com/en/models/416371#profileId-318629
Both this project, and the metal coasters are heavily inspired by the Star Wars Coasters by @Reuter_Corp. (though i do not use the same files or models) at https://makerworld.com/en/models/106683#profileId-113872. That model also include a nice holder for these coasters.
To achieve the slightly darker red on the right hand side of the logo, I inserted a single layer of blue below the red on the right hand side. This works well on my generic PLA, where the red is slightly translucent. Your milage might vary.
I printed this using generic PLA from Clas Ohlson:
The coaster have inserts for magnets, a print plate for 5x2 mm, and one for 10x2.5mm has been included.
The Freecad model has also been provided