Arsenal star Santi Cazorla has tweeted Mikel Arteta to support him after the defensive midfielder picked up an injury in the Gunners' match against Borussia Dortmund last night.
Arsene Wenger's men had a largely positive night, picking up a 2-0 victory, but Arteta's injury is a concern.
The 32-year-old was substituted off in the second-half due to a calf complaint and Wenger revealed after the match that it was going to be difficult to cope with him.
"It's difficult to take on the chin at the moment," Wenger told the BBC. "You go in to many games and need everyone available."
Reports suggest that Arteta could be set for a six-week lay-off, but Cazorla is hoping his compatriot can make a speedy recovery and offered some kind words on social media site Twitter this morning.
Arteta's injury adds to the growing list of players on the treatment table at the Emirates Stadium.
The side have a number of players ruled out at a time where they need all their options available to them.
Arsenal have made their worst league start in 32 years, winning just four of their first 12 Premier League matches.
It has meant the pressure has grown on the Gunners and they will realise a serious improvement will be needed if they are to make it into the top-four.
Their win over Dortmund was a step in the right direction and proved they could compete with the top-teams in Europe, but there is still a long way to go.
Without Arteta Arsenal's task of getting into top-gear looks even harder, with Wenger's options even more limited in defensive midfield.
The experienced French boss's reluctance to sign a midfield enforcer in the summer has already been heavily criticised and this injury could make it an even more costly error.