Pedro offers Chelsea another option in an already potent attack. Getty

The arrival of Pedro Rodriguez at Stamford Bridge gives Chelsea manager Jose Mourinho a rather pleasant problem to mull over ahead of the club's next game against West Brom. This marks a welcomed change given the tumultuous start he and his side have endured to the new season.

The now former Barcelona winger trained with the Premier League champions for the first time on 27 August, hours after completing his £21m ($32.9m, a figure confirmed by the Catalan giants), move right under the noses of Manchester United.

After taking just one point from a possible six in a two-week period marred by the controversy surrounding the role of first team doctor Eva Carneiro, the surprise pursuit and subsequent arrival of the World Cup winner has served as a welcome distraction. The question now is where will Pedro fit into Mourinho's first team?

Logic suggests the player whose position is most at threat is Willian. Pedro has excelled as a right winger and would surely offer a greater goal threat than the six the Brazil international has contributed since his arrival in West London two years ago. But his role as an unsung hero means he is a firm favourite of the manager's, having started 28 of the club's 38 league games last season. Already, reports have emerged suggesting the Blues have no intention of selling the all-action attacker, whose first choice status also contributed to the departure of Andre Schurrle last January and Juan Cuadrado's peripheral role following his arrival. So far, Willian has taken on challenges to his role in the team and come out untroubled.

Willian remains a firm favourite of Jose Mourinho Reuters

Elsewhere, reigning PFA Player of the Year Eden Hazard will remain untouchable in the Blues line-up. Last season he was at his compelling best down the left wing, and the arrival of Pedro on the other flank could equip the Blues with their most feared wide options since Arjen Robben and Damien Duff routinely terrorised full-backs during Mourinho's first reign in charge. If the Spain international displaces Willian, that is.

Another possibility could see Pedro take up Hazard's role on the left, allowing the Belgium international more freedom to wreak havoc in a more central position, with doubts over Oscar's long-term future in that role. Pedro's tactical intelligence and outstanding ability to drag opponents out of position suggest he and Hazard would be a fierce tandem, however they line up.

Pedro's potency in front of goal could also make him a candidate for a role as the club's no. 9. Diego Costa's erratic hamstrings and Radamel Falcao's Premier League malaise suggest Mourinho could at times this season need someone to fill the void at the focal point of his attack. Having occupied a role through the middle for Spain in the past and possessing the goal-scoring record most strikers would be proud of, he would be a viable candidate.

But for two players who already had questions marks over their futures at the club, Pedro's arrival is likely to signal the end for them. Stoke City attempted to buy Victor Moses earlier this summer only for Mourinho to block their efforts, later extolling the "evolution" the former Crystal Palace starlet has undergone. While the Nigeria international provides an alternative option in attack, his role in the pecking order is likely to have fallen.

The same fate will presumably hit Juan Cuadrado. For the all the praise Chelsea's transfer business has garnered during Mourinho's second tenure at the club, the Colombia international's spell has been nothing short of a disaster. Signed for £23.3m in January 2015, he started just four games for the club last season and, inevitably, reports suggest he will be the first out the door to accommodate Pedro.