Kostas Mitroglou Greece
Kostas Mitroglou celebrates after scoring against Romania, November 15. Reuters

As the January transfer window draws ever closer, links to Arsenal, with players reportedly on the verge of signing a deal rises and rises.

According to the latest reports, Arsenal could have at their disposal a striker, prolific in front of goal this season, and a winger, tipped for a bright future and compared with the incomparable Cristiano Ronaldo, for the second half of the campaign.

Greek club Olympiakos have admitted they will find it difficult to keep hold of Konstantinos "Kostas" Mitroglou if they were to receive a sizeable offer in the January window.

Mitroglou has sent a few eyebrows out of their foreheads this season, showing incredible form in front of goal, scoring 17 goals in 15 appearances, including a brilliant hat-trick in the Champions League against Anderlecht.

The Greece striker was also instrumental in his country's passage through to the 2014 World Cup in Brazil, scoring three of the four goals that saw them top Romania in the playoffs.

So, Mitroglou is undoubtedly in prime form, and with his physical presence, and finishing ability, is a handful for any defence, as many have found out to their detriment this season.

"We've known for some time that there has been interest from many clubs," Olympiakos manager Michel admitted. "But that's only logical considering how well he has been doing lately.

"There have been no concrete proposals so far, but if he keeps on doing well, it's going to be hard to keep him."

Arsenal and Liverpool have been credited with interest in the 25-year-old and the former, especially, could really use him, as Olivier Giroud looks for some help up front.

Arsene Wenger admitted he is in the transfer market for a new striker, but much will depend on if he can get quality in during the winter window, so difficult to do midway through the season.

One, Mitroglou, a product of the Duisburg and Borussia Monchengladbach youth system, has not proven himself consistently enough to take a big punt, but being rated at around £7 million, he might be worth taking a shot in January.

Two, Mitroglou will be cup-tied for the Champions League, something that will definitely work against him when Wenger considers his options.

However, if the striker can be given enough bedding-in time, like Giroud received last season, he just might be a priceless acquisition come next season.

Meanwhile, Arsenal are also being heavily linked with a move for Real Betis winger Alvaro Vadillo, who according to reports in Spain is on the verge of agreeing a move to the Emirates in the January transfer window.

Vadillo's agent Jose Puerta revealed his client, hailed as the new Ronaldo and also linked with a move to north London rivals Tottenham, would be interested in joining Arsenal, but insisted no contact has been made as yet.