Pessimistic Swansea City fans might be tempted to wonder when exactly the Swans' bubble is going to burst after an incredible ascent.

Since winning promotion to the Premier League in 2011 under the guidance of former Watford boss Brendan Rodgers the Swans have consolidated in the top flight, won the League Cup and played in the Europa League.

After a flying start from Garry Monk's men, currently fourth in the Premier League and unbeaten after as many games, the question now is what can they achieve under English management's brightest young thing?

The 36-year-old from Bedfordshire is in just his second full season at the helm and has already delivered the highest Premier League finish in the club's history by securing eighth place last term.

A former centre-back with the Swans, Monk made more than 200 league starts for the club with his last appearance a 3-1 defeat at Birmingham City in the League Cup in 2013.

Integrated into the coaching staff towards the end of his playing career, the former Southampton defender was handed the reins on a caretaker basis after Michael Laudrup was sacked in February of the 2013/14 campaign.

A 3-0 win over south Wales rivals Cardiff City was the perfect start to life in the managerial hot-seat for Monk but with the exertions of Europe to contend with, the Swans were gradually dragged into a relegation battle.

Although they would eventually finish 12th - their lowest final position since winning promotion four years ago - it was not until a run of three wins from their final four that the threat of the drop was finally extinguished.

A strong first half of last season found Swansea ninth on New Year's Day. The £28 million departure of striker Wilfried Bony to Manchester City did not derail Monk's side, instead going from strength-to-strength in the second half of the season without their talisman.

Bafetimbi Gomis, yet another shrewd signing the previous summer from Lyon, stepped up to the plate instead and scored eight times in the second half of the season - compared to two prior to the new year - as he emerged from the sizeable shadow of Ivorian hitman Bony.

The 30-year-old Frenchman has taken that form forward into the current campaign by netting once in each of the Swans' opening four Premier League fixtures.

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But he is far from the only success story of a transfer model which has seen the Swans extract value from all corners of the globe since their return to the top flight.

Andre Ayew, formerly of Marseille, could well be the next success for the club after joining on free transfer from the Ligue 1 outfit. With three strikes in his first four league games the versatile Ghanaian has hit the ground running after nine years in France.

Jonjo Shelvey looks every bit the midfielder Liverpool hoped they were investing in when they poached him from first club Charlton Athletic as a precocious teenager.

Capped twice by England during the international break, the Romford native looks a snip at the £5 million it cost Danish legend Laudrup to prise him away from Anfield two summers ago.

Blessed with great vision, a good range of passing and an eye for a spectacular goal, Shelvey appears to have timed his form perfectly with the 2016 European Championships to follow at the end of the domestic season.

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Another to catch the eye in recent weeks is Ecuadorian wideman Jefferson Montero.

The 26-year-old joined last season from Mexican side Morelia and after making half of his 30 Premier League appearances from the bench, now appears ready to take the division by storm this season.

There are any number of other success stories in the Swansea ranks, too.

Goalkeeper Lukasz Fabianski has proved himself a reliable number one after years of inconsistency as a deputy at Arsenal whilst Gylfi Sigurdsson has continued the form he displayed whilst on loan with Swansea from Hoffenheim in 2012 when he netted seven times in just 17 outings.

Even journeyman Wayne Routledge has found a home at the Liberty Stadium, establishing himself as a regular in the three behind Gomis with a string of fine displays.

Most remarkable of all is this success has been sustained and improved upon by Rodgers, Laudrup and now Monk in just four years. What will the next four years hold?

Swansea City XI v Manchester United (30.8.15): Fabianski; Naughton, Williams (c), Fernandez, Taylor; Shelvey, Cork; Ayew, Sigurdsson, Routledge; Gomis.