Luan Brazil Rio Olympics
Luan was one of the stars for Brazil at the Rio OlympicsReuters

Liverpool could yet have a fair few ins and outs before the transfer window closes on Wednesday. With Jurgen Klopp still fine-tuning his squad, the Premier League club have been linked with several high-profile moves, while a few exits could be in the offing as well.

The Reds have made a lukewarm start to their Premier League campaign, following up a 4-3 win over Arsenal with a loss to Burnley and a draw with Tottenham. The last two results have raised a few concerns in the Liverpool camp, and in order to strengthen the attack just that little bit more, Klopp has put in bids for two young, talented forward-thinking players.

According to the Telegraph, who quote a report from Brazil radio station Futebol da Gaucha, Liverpool have made a bid of £30 million for Luan, who currently plays for Gremio.

Luan was one of the most impressive players at the Rio Olympics, as Brazil went on to win the gold medal, with the playmaker also thought to be of interest to Manchester United. However, Liverpool could be ready to beat their rivals to the 23-year-old forward, if Gremio decide to accept the offer.

Another attacking midfielder that Liverpool are interested in is Christian Pulisic, with the club seeing a €12m bid rejected by Borussia Dortmund, according to Kicker. Dortmund are unlikely to sell the 17-year-old, considering the teenager's potential, even if the American could leave the Bundesliga club on loan before the transfer deadline.

While Klopp would like to strengthen his attack, there are also concerns at the back, and one of the players who could shore up the defence is goalkeeper Joe Hart. With the England international certain to leave Manchester City, following the arrival of Claudio Bravo from Barcelona, Liverpool have been linked with a move.

That would mean Simon Mignolet's place in the starting XI being in danger, even if the goalkeeper was quick to play down any worries over his future at Anfield.

"There is no point looking over my shoulder, I have to look in the mirror and look at myself," Mignolet told Sky Sports. "If I keep performing then there is nothing to worry about.

"I think speculation is part of being at a big club like Liverpool. I think every day another player gets linked and that's not going to change, so I'm used to that."

Mignolet might not have to get used to competing with Hart for a place in the Liverpool lineup, because the latter has been heavily linked with a switch to Italian Serie A side Torino.

A couple of Liverpool exits could come in the shape of Lazar Markovic and Mario Balotelli. Markovic is being tipped for a loan move to AC Milan, according to the Daily Star, while Balotelli continues to be linked with French, Italian and Swiss clubs, with Nice and Palermo making their interest public, after FC Sion, last week, admitted they were in talks over a possible transfer.