Gunners boss Arsene Wenger is expected to delve into the transfer market in the New Year in a bid to keep his side in the title race, and has targeted the 26-year-old.
Mulumbu has been impressive for the Baggies for some time, earning much praise for his combative displays.
Wenger is believed to have been impressed by the Democratic Republic of Congo international and is ready to make a serious offer.
The Frenchman is aware that his midfield lacks a little physicality, which is a problem that the burly enforcer would ease.
Despite signing Mathieu Flamini over the summer to add to his midfield ranks, Wenger is still keen to add further numbers.
Arsenal scouts watched Mulumbu against Stoke last week, and were impressed by his combative display.
West Brom are unlikely to be willing to sell, but could be forced into doing a deal if the midfielder pursues a move.
Mulumbu may be tempted by a switch to London, with the Gunners able to offer him Champions League football and a more realistic chance of competing for silverware.
Could Youssouf Mulumbu solve Arsenal’s midfield dilemma?
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