The transfer market remained active during the World Cup and one of the biggest moves of the summer actually took place.

Joining Lionel Messi and Neymar at Barcelona next year is the controversial Luis Suarez, fresh off his bite of Giorgio Chiellini's neck in the World Cup. Suarez's predatory nature is well-noted, not only because of his persistent biting habit, but also because of his tremendous goal-scoring prowess. He will surely become a threat to other Spanish league defenses, but as is always the case with Suarez, it is not that simple.

Suarez's controversial nature makes him a problem for his team as well and this time, the trouble comes from another source -- his tremendous goal-scoring.

The problem is as follows: Suarez is used to being the main man in the Premier League. He was a 31-goal scorer this past season for Liverpool and was also the main source of goals for his nation in the World Cup.

But Suarez does not enter Barcelona as the man expected to lead the charge. Lionel Messi has already occupied that position, and if history has anything to say about this potential mix, it says that the purchase of Suarez could be a disaster.

Neymar was brought in last summer to take the load off Messi's shoulders and give Barcelona another attacking option and versatility on the wings. Neymar's best performances with his new club came when Messi was struggling with a nagging leg injury. He finished the season with a paltry nine goals in the Spanish League for his club. Who knows what shape Neymar will be in by the time the season rolls around. The issue here is that Neymar, who is gifted with speed and goal-scoring ability, was never really able to unleash much of either during his first year with his club. He played cautiously and almost always sought out a means to give the ball to Messi. The Brazilian, who led his nation with four goals this summer, was unable to use his best assets and made a paltry debut for his new team.

Messi is used to scoring bucketloads of goals, and other major goal scorers have had trouble working alongside him in the past. In 2009, Barcelona brought Zlatan Ibrahimovic into the fold to provide goal-scoring support. Ibrahimovic put up 21 goals in all competitions for the Catalan side, but was unhappy with having to cater to Messi. He was eventually shipped out to AC Milan.

After the 2010 World Cup, David Villa was brought in from Valencia to add more goal scoring to the club and be the Robin to Messi's Batman. The relationship worked better but Villa, who had scored over 100 goals for Valencia and was Spain's top goal scorer, found himself scoring just 33 goals in 77 matches during his prime years with Barcelona. There was a well-documented fight on the pitch during a game between Messi and Villa during the 2012-13 season; he never scored more than 23 goals in a season for Barcelona. Villa eventually left and had a stronger season playing second fiddle to Diego Costa in Atletico Madrid. He scored 15 goals in his first and only season with Los Colchoneros.

Suarez is entering his prime years and will probably want to continue his goal-scoring ways. He is used to the center of attention, both on and off the pitch, and this could potentially cause disharmony among the club. Messi no longer has to deal with Neymar's ego, but he arguably has a harder task in overcoming that of Suarez.

Barcelona legend Johan Cruyff thinks that a problem between the trio is imminent.

"I can't see how Barca intends to continue playing the same way, with a keen focus on team play if Messi, Neymar and Luis Suarez are in the side," he stated during an interview with De Telegraaf.

It is not all doom and gloom, of course, as Suarez is also a terrific passer that finished the EPL season with 12 assists. It is possible that he will accept his position as Messi's second fiddle and will be more than willing to allow the superstar the space to score his goals. Meanwhile, Messi and Neymar may also be willing to sacrifice goals to fit Suarez into the mix.

For Barcelona, the positives are obvious. Having Suarez leading the line gives them a true striker; this opens up more space for Messi and Neymar on the flanks and should lead to more goals. How it turns out is one of the most intriguing stories of the 2014-15 season.

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