Chelsea are currently in a conundrum over which left-back target to pursue as they continue to kit out their squad with new lavish signings.

The Blues are looking to secure a deal for Leicester's Ben Chilwell, but have also broadened their search by identifying Sergio Reguilon as another option. According to AS (via Just Arsenal), Chelsea are favourites to sign the Spaniard which could leave the Gunners out in the cold, who are equally as interested in his services.

Both London clubs have been identified as potential suitors for Reguilon, who enjoyed a strong season on loan with Sevilla. The 23-year-old will return to parent club Real Madrid following the Seville club's Europa League campaign, with Los Blancos valuing him at an affordable £22.6million.

Napoli are also said to be interested in the left-back, but with Chelsea's hefty transfer fund, they currently lead the race for his signature. The Athletic recently reported that Roman Abramovich is willing to splash as much as £300million this summer on new signings for the season ahead.

Reguilon may not be Chelsea's first choice, but they may have to shift their full attention to him as Manchester United threaten their stance in a move for Chilwell.

According to The Mirror, Ole Gunnar Solskjaer is also looking to revamp his defence and is an admirer of the £80million-valued Foxes man, who is a known target of Chelsea.

With United now in the equation, it could potentially be game over for Chelsea. Both sides finished in the top four so in terms of title challenging, it's pretty much an even ground. However, the Reds may hold a trump card by also having Harry Maguire on their books. Chilwell may find the idea of joining his former Leicester teammate at Old Trafford more appealing.

If this is the case, Chelsea must step up their pursuit of Reguilon before they are left without a new left-back next term.

With their hefty budget, the Blues will likely table an offer both the Spaniard and Madrid can't refuse, which will seriously hurt Arsenal's attempt to bolster their own squad.

Which defender do you think Chelsea should focus on? Join the discussion in the comments below!