Rondon will face competition from Muto, Ayoze Perez and Kenedy for a place in Rafael Benitez's starting XI to face Tottenham Hotspur next weekend.
"When things are not going well off the pitch you can see a reflection on the pitch", Benitez told the Guardian after this week's 4-0 preseason defeat to Braga. Pressed as to whether he was referring to recruitment at a club showing a profit on summer dealing he replied: "Everything - I'm really anxious".
The former Burnley forward is another Benitez has had his eye on for quite a while, and although the Anfield outfit are said to be holding out for £20 million, the Toon boss is hoping his former club will allow the England man to leave on loan. Put it all together and you understand why the fans need to be concerned.
Mike Ashley's continued refusal to meaningfully back Newcastle United has once again led to mass frustration amongst the Newcastle United fanbase, but Ashley has found an unlikely ally in BeIN Sports presenter Richard Keys.
The club announced that Muto has signed an initial four-year contract at St James' Park.
The Japan global becomes The Geordies fifth signing of the summer, joining Martin Dubrvaka, Ki Sung-yueng and Fabian Schar, as well as the loan capture of Kenedy, at St James' Park.
Conor McGregor to fight Khabib Nurmagomedov at UFC 229 in Las Vegas
Poirier also makes his initial prediction for the Khabib Nurmagomedov-Conor McGregor title fight on October 6 at UFC 229. As it played, Diaz abruptly left the presser he was at and tweeted "I'm not fighting on that show (expletive) the UFC ".
On the other hand, midfielder Mikel Merino has been sold for £10m.
Newcastle-bound, Japan forward Yoshinori Muto.
"I'm not saying we're not working, but the point is we were ready to go and we knew what we wanted to do".
With Florian Lejeune out for most of the season with a ruptured cruciate ligament and Mbemba now at Porto, retaining Lascelles is a priority.
"Then we finished 10th and credit to our players, but I still thought we could do something more to be closer".